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Case Study Questions for Class 6 Science Chapter 12 Electricity and Circuits

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Here we are providing case study or passage-based questions for class 6 science chapter 12 Electricity and Circuits.

Case Study/Passage Based Questions

An electric bulb has a filament that is connected to the terminals. The two terminals of filament are fixed with two thick wires provides support to it. These terminals are fixed in such a manner that they do not touch each other. 1. Where is the filament fixed in the electric bulb? (a) Near the positive terminal (b) Near the negative terminal (b) In the middle (d) None of the above is correct 2. Filament is (a) a thin wire that gives off light when bulb is switched on (b) fixed to two thick wires which provides support to it (c) Both the above are correct (d) None of these is correct 3. Which of the following statement(s) is/are correct? (a) The two terminals of a bulb are fixed in such a way that they do not touch each other. (b) The two terminals of a bulb are fixed in such a way that they touch each other. (c) The two terminals of a bulb are connected to the same terminal of the electric cell. (d) None of the above is correct

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What is case study question for class 6 science.

Case study or passage-based questions in class 6 Science typically require students to read a given scenario or passage and answer questions based on the information provided. These questions assess students’ comprehension, analytical thinking, and application of scientific concepts. Here is an example of case study or passage-based questions for class 6 Science:

Passage: Rahul conducted an experiment to investigate how different liquids affect the rusting of iron nails. He placed four iron nails in four separate beakers containing water, vinegar, oil, and saltwater. After one week, he observed the nails and recorded his observations.

a) What is the purpose of Rahul’s experiment?

b) Compare and contrast the appearance of the iron nails in each beaker after one week.

Best Ways to Prepare for Case Study Questions

To develop a strong command on class 6 Science case study questions, you can follow these steps:

• Read the textbook and study materials: Familiarize yourself with the concepts and topics covered in your class 6 Science curriculum. Read the textbook thoroughly and take notes on important information.
• Practice analyzing case studies: Look for case studies or passages related to class 6 Science topics. Analyze the given information, identify key details, and understand the context of the situation.
• Develop comprehension skills: Focus on improving your reading comprehension skills. Practice reading passages or articles and try to summarize the main points or extract relevant information. Pay attention to details, vocabulary, and the overall structure of the passage.
• Understand scientific concepts: Ensure that you have a solid understanding of the scientific concepts discussed in class. Review the fundamental principles and theories related to each topic.
• Make connections: Try to connect the information provided in the case study to the concepts you have learned in class. Identify any cause-effect relationships, patterns, or relevant scientific principles that apply to the situation.
• Practice critical thinking: Develop your critical thinking skills by analyzing and evaluating the information given in the case study. Think logically, consider multiple perspectives, and draw conclusions based on the evidence provided.
• Solve practice questions: Look for practice questions or sample case study questions specifically designed for class 6 Science. Solve these questions to apply your knowledge, practice your analytical skills, and familiarize yourself with the format of case study questions.
• Seek clarification: If you come across any challenging concepts or have doubts, don’t hesitate to ask your teacher for clarification. Understanding the underlying principles will help you tackle case study questions effectively.

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Case Study Questions Class 6 Science Getting to Know Plants

Case study questions class 6 science chapter 7 getting to know plants, cbse case study questions class 6 science getting to know plants, case study 1, case study 2, case study 3, case study 4.

Roots help in holding the plant firmly to the soil. Theyanchor the plant to the soil. Go to an open ground where many wildPlants are growing. Dig out a few, washthe soil off the roots and observe them.You will find that all of them have eitherthe kind of roots shown in Fig. 1or as in Fig.2. For roots of the kind shown in Fig.1, the main root is called tap root and the smaller roots are called lateral roots. Plants with roots as shown in Fig.2 do not have a main root. All roots seem similar and these are called fibrous roots.

Case study 5

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NCERT Solutions for Class 6, 7, 8, 9, 10, 11 and 12

NCERT Class 6 Science Chapter 12 Question Answer Beyond Earth

August 17, 2024 by phani

Beyond Earth NCERT Class 6th Science Chapter 12 Question Answer

Beyond earth class 6 questions and answers.

Let Us Enhance Our Learning (Pages 249-251)

Question 2. (i) Solve the following riddle. My first alphabet is in MAN but not in CAN My second alphabet is in ACE and also in FAN My third alphabet is in RAT and not in CAT My fourth alphabet is in SUN but not in FUN I am a planet that moves around the Sun.

(ii) Make two similar riddles by yourself. Answer: (i) MARS (a) My first alphabet is in VAN but not in PAN My second alphabet is in EARTH and also in HEAVEN My third alphabet is in ONE and not in TWO My fourth alphabet is in SUN and also in FUN My last alphabet is in STAR but not in RADAR I am a planet that moves around the Sun. Answer: VENUS

(b) My first alphabet is in EAT but not in BAT My second alphabet is in FAT and also in SAT My third alphabet is in RAT and not in MAT My fourth alphabet is in TEN and also in NET My fifth alphabet is in HAT but not in PAT. I am a planet that moves round the Sun. Answer: EARTH

Question 3. Which of the following is not a member of our Solar System? (i) Sirius (ii) Comets (iii) Asteroids (iv) Pluto Answer: (i) Sirius

Question 4. Which of the following is not a planet of the Sun? (i) Jupiter (ii) Pluto (iii) Neptune (iv) Saturn Answer: (ii) Pluto

Question 5. Which is the brighter star, the Pole Star or Sirius? Answer: Sirius

Question 9. You can see stars fading away at dawn and appearing f at dusk. During the day we do not see the stars. Explain why? Answer: During the day, the Sun’s bright light outshines the stars, making them invisible to our eyes. The atmosphere scatters the sunlight, creating the blue sky and masking the faint light of the stars.

Question 10. During a clear night, try to observe the Big Dipper 3-4 times at , an interval of 2 to 3 hours. Also try to locate the Pole Star each time. Does the Big Dipper appear to move? Draw a rough sketch to illustrate this, mentioning the time in each case. Answer: The Big Dipper appears to move around the Pole Star due to the rotation of the Earth. Over a few hours, its position changes, making it seem as if it is rotating around the Pole Star.

Illustration: Do it yourself.

Question 11. Think about the night sky and write a poem or a story on it. Answer: Do it yourself.

NCERT Solutions for Class 6 Science Chapter 12 Electricity and Circuits

Topics and Sub Topics in Class 6 Science Chapter 12 Electricity and Circuits:

1. Fill in the blanks: (a) A device that is used to break an electric circuit is called_______________ (b) An electric cell has___________ Ans: (a) switch (b) two

2. Mark ‘True’ or ‘False’ for the following statements: (a) Electric current can flow through metals. (b) Instead of metal wires, a jute string can be used to make a circuit. (c) Electric current can pass through a sheet of thermocol. Ans: (a) True (b) False (c) False.

5. What is the purpose of using an electric switch? Name some electrical gadgets that have switches built into them. Ans: Electric switch is used to make electric circuit open or closed for a particular appliance and hence with the help of a switch we can use an appliance according

6. Would the bulb glow after completing the circuit shown in Fig. 12.9 if instead of safety pin we use an eraser? Ans: No, since eraser is an insulator so it does not allow the current to pass. Hence the bulb will not glow.

8. Using the“conduction tester” on an object it was found that the bulb begins to glow. Is that object a conductor or an insulator? Explain. Ans: Yes, if the object is good conductor of electricity then current will pass through conduction tester and the bulb will glow. Hence the object will be a conductor of electricity.

9. Why should an electrician use rubber gloves while repairing an electric switch at your home? Explain. Ans: Our body is good conductor of electricity and rubber is insulator. During repairing work if the body comes in contact with current carrying wire then there will not be any accident as rubber does not allow the passage of current through it. Hence electrician uses rubber gloves while repairing an electric switch.

10. The handles of the tools like screwdrivers and pliers used by electricians for repair work usually have plastic or rubber covers on them. Can you explain why? Ans: Plastic or rubber is an insulator which does not allow electric current to pass through it. The handles of the tools like screwdrivers and pliers used by electricians for repair have covering of plastic or rubber so that electric current may not pass through these tools to the body of the electrician to harm him.

Class 6 Science Chapter 12 VERY SHORT ANSWER TYPE QUESTIONS

1. What is the direction of flow of current in a dry cell? Ans: . The current flows in closed circuit from +ve to -ve terminal of cell.

2. Name the +ve terminal of dry cell. Ans:. Carbon rod with a metal cap on it.

3. Name the -ve terminal of a dry cell. Ans:  Zinc metal plate.

4. What is dry cell? Ans:  It is a device which converts chemical energy into electrical energy.

5. What is solar cell? Ans: A device which converts solar energy into electrical energy.

6. What is open circuit? Ans:  An electric circuit in which electrical contact at any point is broken is called open circuit.

7. Write one use of insulators. Ans: Insulators are used in making switchboard, handles of testers, screw drivers.

8. What is the name of thin wire in the electric bulb? Ans: Filament.

Class 6 Science Chapter 12 SHORT ANSWER TYPE QUESTIONS

1. Mention two advantages of a dry cell. Ans: 1. It converts chemical energy into electrical energy. 2. It is light and small in size.

4. Define conductors and insulators. Give one example of each. Ans:  A conductor is that which easily allows the passage of current through it. Example: Aluminium or any metal. An insulator is that which does not allow the passage of current through it. Example: Rubber.

5. Identify conductors and insulators from the following:Eraser, paper, matchstick, copper wire, pencil lead, polythene Ans: Conductors: Copper wire, pencil lead. Insulator. Eraser, paper, matchstick, polythene.

6. Name the scientist who invented electric cell and the scientist who invented electric bulb. Ans: Electric cell: Alessandro Volta. Electric bulb: Thomas Alva Edison.

7. Give one activity to prove that air is an insulator. Ans: Take an electric circuit, keep the terminals unconnected in the air. The bulb do not glow, as air is an insulator and does not allow the current to flow through it.

8. In any electric circuit, when the switch is on and the current flows through it why do the wire, switches, bulb or devices become hot? Ans.: This is because electric energy changes into heat energy.

9.The headlights of a car have reflectors behind the bulb. What is the function of reflectors? Ans: The reflector helps in reflecting the light into a focussed area.

10.If you touch an electric wire carrying current you get a shock, but if on the same wire the birds sit they do not get any shock/current. Explain why? Ans: When we hold the wire carrying current then the circuit is closed and the current flows from our body and enters earth but the birds sitting on the same wire do not get any current as the circuit is not complete. If the bird touches the earth wire, it will also die due to electric shock.

Class 6 Science Chapter 12 LONG ANSWER TYPE QUESTIONS

NCERT Solutions for Class 6 Science – All Chapters

• Chapter 1 The Wonderful World of Science
• Chapter 2 Diversity in the Living World
• Chapter 3 Mindful Eating: A Path to a Healthy Body
• Chapter 4 Exploring Magnets
• Chapter 5 Measurement of Length and Motion
• Chapter 6 Materials Around Us
• Chapter 7 Temperature and its Measurement
• Chapter 8 A Journey through States of Water
• Chapter 9 Methods of Separation in Everyday Life
• Chapter 10 Living Creatures: Exploring their Characteristics
• Chapter 11 Nature’s Treasures
• Chapter 12 Beyond Earth

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NCERT Exemplar Solutions for Class 6 Science Chapter 12 - Electricity and Circuits

NCERT Exemplar Solutions for Class 6 Science Chapter 12 – Electricity and Circuits aid students in effective preparation for the annual exams. The solutions are prepared by expert faculty having vast knowledge in their respective field. Students aspiring to secure high marks in the final examination are advised to practise the solutions on a regular basis. To learn the concepts in a better way, students can download the NCERT Exemplar Class 6 Science Solutions PDF for free and practise offline as well.

Chapter 12 – Electricity and Circuits, deals with circuits and direction, in which the current flows, and provides answers to all the questions related to each and every concept covered in this chapter. The solutions have been designed in a unique and simple manner so that students can understand the concepts clearly. NCERT Exemplar Class 6 Science Solutions are provided in PDF in the link below for students to download easily.

Download the PDF of NCERT Exemplar Solutions for Class 6 Science Chapter 12 – Electricity and Circuits

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Multiple Choice Questions:

1. Choose from the options a, b, c and d given in fig 12.1, which shows the correct direction of the current.

(b): In an electric circuit, the direction of current flows from the positive terminal to the negative terminal of the electric cell.

2. Choose the incorrect statement. (a) A switch is the source of electric current in a circuit. (b) A switch helps to complete or break the circuit. (c) A switch helps us to use electricity as per our requirement. (d) When the switch is open, there is an air gap between its terminals. Solution:

(a): A switch is the source of electric current in a circuit.

An electric cell is the source of electric current in a circuit, not the switch.

3. In an electric bulb, light is produced due to the glowing of (a) the glass case of the bulb (b) the thin filament (c) the thick wires supporting the filament (d) gases inside the glass case of the bulb. Solution:

(b): the thin filament

4. In the following arrangement shown in fig 12.2, the bulb will not glow if the ends A and B are connected with

(a) A steel spoon (b) A metal clip (c) A plastic clip (d) A copper wire Solution:

(c): A plastic clip

A plastic clip is a poor conductor of electricity; it is an insulator.

5. In the circuit shown in fig 12.3, when the switch is moved to the ‘ON’ position,

(a) bulb A will glow first (b) bulb B will glow first (c) bulb C will glow first (d) all bulbs will glow together Solution:

(d): all bulbs will glow together

As soon as the circuit gets completed, the current is found at every point in the circuit instantly.

6. Filament of a torch bulb is (a) a metal case (b) metal tip at the centre of the base (c) two thick wires (d) a thin wire Solution:

(d): a thin wire

7. Paheli is running short of connecting wires. To complete an electric circuit, she may use a (a) glass bangle (b) thick thread (c) rubber pipe (d) steel spoon Solution:

(d): steel spoon

Steel spoon is a good conductor of electricity. Hence, we use a steel spoon to complete an electric circuit.

8. In which of the following circuits, A, B and C, given in fig 12.4, will the cell be used up very rapidly?

In circuit A, the cell will be used up very rapidly.

9. Fig. 12.5 shows a bulb with its different parts marked as 1,2,3,4, and 5. Which of them labels the terminals of the bulb?

Labels 3 and 4 are the terminals of the bulb.

Short Answer Questions:

10. You are provided with a bulb, a cell, a switch and some connecting wires. Draw a diagram to show the connections between them to make the bulb glow. Solution:

11. Will the bulb glow in the circuit shown in fig 12.6? Explain.

No, the bulb will not glow in this circuit because the switch is open, and the circuit is broken. Current flows only in a closed circuit.

12. An electric bulb is connected to a cell through a switch, as shown in fig 12.7. When the switch is brought in the ‘ON’ position, the bulb does not glow. What could be the possible reason/s for it? Mention any two of them.

When the switch is brought in ‘ON’ position, the bulb does not glow. There could be the following reasons for it:

(i) Loose connections.

(ii) Connecting wires are broken.

(iii) The cell is a used one.

(iv) The bulb is fused.

13. A torch requires 3 cells. Show the arrangement of the cells, with a diagram, inside the torch so that the bulb glows. Solution:

14. When the chemicals in the electric cell are used up, the electric cell stops producing electricity. The electric cell is then replaced with a new one. In the case of rechargeable batteries (such – as the type used in mobile phones, cameras and inverters), they are used again and again. How? Solution:

Rechargeable batteries can be recharged by providing them with appropriate current through secondary cells or storage cells.

15. Paheli connected two bulbs to a cell, as shown in fig 12.8,

She found that the filament of bulb B is broken. Will the bulb A glow in this circuit? Give reason. Solution:

No, the bulb will not glow in this circuit as the filament of bulb B is broken. Due to the breakage in the circuit current does not flow.

16. Why do bulbs have two terminals? Solution:

A bulb has a tiny thin wire called filament which consists of two terminals to connect the filament within the circuit so that current can pass through it.

17. Which of the following arrangement, A, B, C and D, given in fig 12.9, should not be set up? Explain why.

Arrangement A should not be set up since the current flows from a negative terminal to the positive terminal, which will exhaust the cell very quickly as the large current will flow through it.

18. A fused bulb does not glow. Why? Solution:

A fused bulb does not glow since the filament inside it is broken, and the circuit is incomplete.

19. Paheli wanted to glow a torch bulb using a cell. She could not get connecting wires; instead, she got two strips of aluminium foil. Will she succeed? Explain how. Solution:

Yes, Paheli will succeed. Aluminium foil being a good conductor of electricity, it can be used as connecting wires for the supply of electricity.

Long Answer Questions:

20. Boojho has a cell and a single piece of connecting wire. Without cutting the wire in two, will he be able to make the bulb glow? Explain with the help of a circuit diagram. Solution:

Yes, he can succeed in getting the bulb to glow by using the given arrangements.

He can connect by connecting to a positive terminal of the cell directly from the second terminal of the bulb, as given in the figure. In this way, the circuit will get completed without using another piece of connecting wire.

21. Fig 12.10 A and B show a bulb connected to a cell in two different ways.

(i) What will be the direction of the current through the bulb in both cases (Q to P or P to Q)? (ii) Will the bulb glow in both cases? (iii) Does the brightness of the glowing bulb depend on the direction of current through it? Solution:

(i) In the case of Q to P: the current flows from the positive terminal to the negative terminal.

In the case of P to Q: the current flows from the negative terminal to the positive terminal.

(ii) Yes, the bulb will glow in both cases as the current is flowing and the circuit is complete.

(iii) No, the brightness of the glowing bulb does not depend on the direction of the current through it. The amount of current and voltage in the circuit decides the brightness of the glowing blub.

22. Think of six activities which use electric current. Also, name the devices used to perform the activity.

23. A torch is not functioning, though contact points in the torch are in working condition. What can be the possible reasons for this? Mention any three. Solution:

The possible reasons for the torch, not functioning could be

(i) The switch may be faulty.

(ii) The cells may not be placed in the correct order.

(iii) The cells may have been used up.

(iv) The filament may be fused in the bulb.

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Important Questions for Class 6 Science Chapter 12 Electricity and Circuits

Important Questions for Class 6 Science Chapter 12 Electricity and Circuits is given in this article. The answers of these important questions is prepared by our expert teachers as per the latest NCERT book and CBSE guidelines. Practicing these questions before the exam will help students to get excellent marks in the exam. Students can also download PDF of Class 6 Science Chapter 12 Electricity and Circuits important questions and answers from the links below.

Electricity and Circuits Class 6 Important Questions and Answers

Below we have complied the Class 6 Science Chapter 12 Electricity and Circuits important questions with answers. These important questions are divided into three parts. They are – Very short questions, short questions and long important question. CBSE important Questions for Class 6 Science will help to score more marks in your CBSE Board Exams.

Very Short Answer Type Questions

1. What is the direction of flow of current in a dry cell? Answer:  The current flows in closed circuit from +ve to -ve terminal of cell.

2. Name the +ve terminal of dry cell. Answer: Carbon rod with a metal cap on it.

3. Name the -ve terminal of a dry cell. Answer:   Zinc metal plate.

4. What is dry cell? Answer:   It is a device which converts chemical energy into electrical energy.

5. What is solar cell? Answer:  A device which converts solar energy into electrical energy.

6. What is open circuit? Answer:   An electric circuit in which electrical contact at any point is broken is called open circuit.

7. Write one use of insulators. Answer:  Insulators are used in making switchboard, handles of testers, screw drivers.

8. What is the name of thin wire in the electric bulb? Answer:  Filament.

Short Answer Type Questions

1. Mention two advantages of a dry cell.

Answer:   1. It converts chemical energy into electrical energy. 2. It is light and small in size.

2. Draw a diagram showing the two terminals of a bulb. Answer:

3. Draw the circuit diagram for operating a bulb with the help of a dry cell. Answer:

4. Define conductors and insulators. Give one example of each. Answer:   A conductor is that which easily allows the passage of current through it. Example: Aluminium or any metal. An insulator is that which does not allow the passage of current through it. Example: Rubber.

5. Identify conductors and insulators from the following: Eraser, paper, matchstick, copper wire, pencil lead, polythene  Answer:  Conductors: Copper wire, pencil lead. Insulator. Eraser, paper, matchstick, polythene.

6. Name the scientist who invented electric cell and the scientist who invented electric bulb. Answer:  Electric cell: Alessandro Volta. Electric bulb: Thomas Alva Edison.

7. Give one activity to prove that air is an insulator. Answer:  Take an electric circuit, keep the terminals unconnected in the air. The bulb do not glow, as air is an insulator and does not allow the current to flow through it.

8. In any electric circuit, when the switch is on and the current flows through it why do the wire, switches, bulb or devices become hot? Answer: This is because electric energy changes into heat energy.

9.The headlights of a car have reflectors behind the bulb. What is the function of reflectors? Answer:  The reflector helps in reflecting the light into a focussed area.

10.If you touch an electric wire carrying current you get a shock, but if on the same wire the birds sit they do not get any shock/current. Explain why?

Answer:  When we hold the wire carrying current then the circuit is closed and the current flows from our body and enters earth but the birds sitting on the same wire do not get any current as the circuit is not complete. If the bird touches the earth wire, it will also die due to electric shock.

Long Answer Type Questions

(i) What is electric circuit? (ii) How many types of electric circuit are there? Define them. (iii) Draw a diagram to show the closed circuit for switch, bulb and dry cell.

Answer:  (1)The diagram that shows the path of electric current is called electric circuit.

(2) There are two types of electric circuit: (a) Open electric circuit (b) Closed electric circuit

(a) Open electric circuit:  The circuit in which electrical contact at any point is broken is called open electric circuit. (b) Closed electric circuit:  The circuit in which electric current flows from one terminal of a cell or battery to the other is called a closed circuit.

2:   What is the difference between conductor and an insulator? Explain with examples.

Answer: Materials that allow electric current to pass through them are called conductors. For example: iron, copper etc. Metals are good conductors. Materials that do not allow electric current to pass through them are called insulators. For example-rubber, plastic etc.

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NCERT Solutions Class 6 Science Chapter 12

Home » NCERT Solutions » NCERT Solutions Class 6 Science Chapter 12

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NCERT Solutions for Class 6 Science Chapter 12

NCERT Class 6 Science Chapter 12 covers the topics of electricity and circuits in detail. It explains the concepts of different electrical devices, electrical circuits, switches, conductors, insulators etc. There are practise questions at the end to help students revise the concepts learned and gauge their understanding of the chapter at the same time.

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The NCERT Solutions for Class 6 Science Chapter 12 are a comprehensive and accurate guide to the exercise questions of the NCERT textbook. Referring to these NCERT Solutions will help students in preparing for exams more effectively.

NCERT Class 6 Science Other Chapters Solutions

NCERT Solutions for Class 6 Science Chapter 12 Topic-Wise Discussion

The NCERT Class 6 Science Chapter 12 starts with an introduction to electricity and circuits in general. It discusses the importance of electricity in our daily lives and mentions some devices that rely on it to function.

There are a total of five subsections in Chapter 12. They are discussed topic-wise in detail as follows: 

Electric Cell

The chapter explains the concept of the electric cell while covering the functionality of different types of electric cells, their architecture and the hazard sign on them.

The working principle of these cells is explained through various experiments. There are even two DIY activities that you can perform at your home to understand it. The first one includes understanding the architecture of a torch bulb which you can understand by taking out a bulb and studying all its different parts. 

Bulb Connected to an Electric Cell

The following section on electricity and circuits Class 6 will teach you how to light a torch bulb using an electric cell. It will provide a step-by-step guide on how to execute this process without any difficulty. 

For this purpose, students have to take two electric wires of different colours and bring out their metal cores by cutting off their plastic covering. After that, they will have to join one end of the exposed metal portion with the cell and the other with the bulb. For sticking them, students can use the tape that is generally used by electricians for doing so. Students can then experiment by interchanging the wires and note down the results to discuss their observations later. 

Electric Circuit

As suggested by the name of the chapter, it presents a detailed explanation of electrical circuits. Taking a cue from the earlier experiment, students must be clear on the basics of an electrical circuit when they light a torch bulb by the use of an electrical cell.

In the earlier experiment, an electrical circuit was created by joining an electrical cell with a torch bulb. This led to the creation of a path where the electricity could pass between two terminals of electric cells. Likewise, this section of the chapter also provides a DIY project that students can perform to improve their understanding of the fundamentals of an electrical circuit.

Electric Switch

As the name suggests, this section discusses the concept of an electric switch. Electric switches are essential in an electrical circuit because they control the flow of electricity in an electrical circuit.

Students can perform an activity mentioned in the section to understand the electrical switches in a better way. The activity includes the use of paper clips, wooden boards, safety pins, and other household materials to create a circuit and an electrical switch.

Electric Conductors and Insulators

This section discusses various conductors and insulators. It also discusses the different types of objects and their electricity transportation ability. Insulators, their function, and their importance in electrical circuits are also discussed in the section. 

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NCERT Solutions for Class 6 Science Chapter 12 provided by Extramarks will help the students in their exam preparation in the following ways:

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Q.1 Fill in the blanks:

(a) A device that is used to break an electric circuit is called _____ .

(b) An electric cell has _____ terminals.

(a) A device that is used to break an electric circuit is called a switch .

(b) An electric cell has two terminals.

Q.2 Mark ‘True’ or ‘False’ for the following statements:

(a) Electric current can flow through metals.

(b) Instead of metal wires, a jute string can be used to make a circuit.

(c) Electric current can pass through a sheet of thermo Col.

(a) Electric current can flow through metals. (True)

Explanation: Electric current can pass through metals as they allow an electric current to flow through them easily.

(b) Instead of metal wires, a jute string can be used to make a circuit. (False)

Explanation: Jute string is an insulator. Hence, electric current cannot pass through it.

(c) Electric current can pass through a sheet of thermo Col. (False)

Explanation: Thermo Col is also an insulator. Hence, electric current cannot pass through it.

Q.3 Explain why the bulb would not glow in the arrangement shown in Fig.12.13.

In the given circuit, a tester holder is connected in series. Electric current cannot pass through tester holders because it is a bad conductor of electricity. Hence, the current will not flow through the circuit and hence, the bulb will not glow.

Q.4 Complete the drawing shown in Fig 12.14 to indicate where the free ends of the two wires should be joined to make the bulb glow.

In order to complete the circuit, the positive terminal of the cell should be connected to one end of the bulb, and the other terminal of the bulb should be connected to the other end of the bulb. It can be shown in the figure.

Q.5 What is the purpose of using an electric switch? Name some electrical gadgets that have switches built into them.

A switch is used to complete or break an electric circuit. If the switch is ‘ON’, then current will flow through the circuit. On the other hand, if the switch is ‘OFF’, then current will not flow through the circuit. Electric fans, electric lamps, washing machines, juicers and mixers, etc. have switches built into them.

Q.6 Would the bulb glow after completing the circuit shown in Fig. 12.14, if we use an eraser instead of a safety pin?

No. The bulb will not glow if we connect an eraser in the circuit. It is because erasers are bad conductor of electricity. They do not conduct electricity. The circuit becomes an open circuit.

Q.7 Would the bulb glow in the circuit shown in Fig. 12.15?

No. The bulb will not glow because the two terminals of the cell are connected to the single terminal of the bulb. In order to complete the circuit, the two terminals of the cell should be connected to the two terminals of the bulb.

Q.8 Using the “conduction tester” on an object it was found that the bulb begins to glow. Is that object a conductor or an insulator? Explain.

The bulb of the conduction tester glows when the tester is touched with the object. It shows that the given object conducts electricity. Hence, the object is a conductor in nature.

Q.9 Why should an electrician use rubber gloves while repairing an electric switch at your home? Explain.

An electric switch conducts electricity through its internal parts and one may get an electric shock if it is touched with naked hands. Hence, it should be touched with rubber gloves in hand because rubber cannot conduct electricity.

Q.10 The handles of the tools like screwdrivers and pliers used by electricians for repair work usually have plastic or rubber covers on them. Can you explain why?

Plastics and rubbers are the bad conductor of electricity. So, handle of tools such as screwdrivers, pliers, etc. which are used by electricians to repair electrical appliances usually have plastic or rubber cover on them.

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Faqs (frequently asked questions), 1. what is the use of an electric switch name some electric gadgets that have an in-built electric switch..

Electric switches are used to complete or break an electrical circuit. Refrigerators, fans, microwave ovens, and electric cookers are some electrical gadgets that have inbuilt switches in them. 

2. Discuss the different types of questions that can be expected in exams from this chapter- Electricity and Circuits.

Solutions to 10 questions are included in the NCERT Solutions of Class 6 Science Chapter 12. It also contains short question answers and some fill-in-the-blank questions that you can go through for practice. In case you are unable to answer the textbook questions correctly, you can access the solutions and clear your queries from these solutions. 

All the fundamental concepts of the chapter highlighted in the solutions are to prepare you to face the changes that may occur in the industries. It has been prepared in an interactive way for your problem-solving.

3. How can an electric current be set up?

For setting up an electric current, an energy source like a battery is needed. Such a battery must produce a voltage (when the switch of the electrical circuit is switched on) so there can be a movement of electrons in the proper direction. There’s a switch in the circuit. When the switch is turned on, the electrons flow in a single direction. The force acting on electrons is known as electromotive force and the quantity is a voltage, measured in volts. 

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