The topic of "Electricity and Circuits" in Class 6 Science, particularly in Chapter 9, is an electrifying and essential part of the curriculum. At WitKnowLearn, we focus on making this topic engaging and accessible for young minds, ensuring that the concepts of electricity and circuits are clearly understood and interesting.
In this chapter, Class 6 students embark on an exciting journey into the world of electricity. They learn about the basics of electric circuits, conductors and insulators, and the role of a switch. The chapter is like a window into the world of electrical science, demystifying how everyday electrical devices work.
Understanding electric circuits is crucial. Students discover how a circuit is formed and the importance of its various components, such as wires, bulbs, switches, and batteries. They learn that for electricity to flow and make a bulb light up, a complete circuit without any breaks is needed.
The concept of conductors and insulators is another key learning point. Students explore materials that allow electricity to pass through them (conductors) and those that do not (insulators). This knowledge is fundamental in understanding and safely interacting with electrical devices.
The Class 6 Science Chapter 9 question and answer section is a valuable resource for students to reinforce their learning. It provides a range of questions that help students test their understanding and prepare for school assessments.
At WitKnowLearn, we believe in making learning a fun and interactive experience. Our resources are designed to make complex concepts simple, ensuring that students feel confident and interested in the subject. So, join us in exploring the electrifying world of electricity and circuits, and light up your understanding of this fascinating topic
Electricity and Circuits Class 6
Q1. Fill in the blank:
A device that is used to break an electric circuit is called _________.
Ans: A device that is used to break an electric circuit is called a switch.
Explanation:
Switch:
A switch is an electric device that is used to break a circuit. When the switch is in ‘OFF’ position, then the circuit is not complete. Then, the circuit is called an open circuit. An electric current cannot flow through this circuit.
Q2. Fill in the blank:
An electric cell has _______________ terminals.
Ans: An electric cell has two terminals.
Explanation:
Two:
An electric cell has two terminals, a negative terminal and a positive terminal.
Q3. Mark ‘True’ or ‘False’ for the following statement:
Electric current can flow through metals.
Ans: True.
Explanation:
Metals are good conductors of electricity. They allow an electric current to flow through them easily. Hence, an electric current can flow through metals.
Q4. Mark ‘True’ or ‘False’ for the following statement:
Instead of metal wires, a jute string can be used to make a circuit.
Ans: False.
Explanation:
Jute string is a bad conductor of electricity. If jute string is used to make an electric circuit, then the current will not
flow through it. Hence, strings made of jute cannot be used to make circuits.
Q5. Mark ‘True’ or ‘False’ for the following statement:
Electric current can pass through a sheet of thermo Col.
Ans: False.
Explanation:
Thermocol is a bad conductor of electricity. Hence, electric current cannot pass through it.
Q6. Explain why the bulb would not glow in the arrangement shown in Fig. ( Diagram in PDF)
Ans:An electric current cannot pass through objects such as plastic scales, tester holders, etc., because these objects are bad conductors of electricity. From the given figure, it can be observed that one terminal of the bulb is connected to a tester holder. A current will not flow through the circuit. Hence, the bulb would not glow.
Q7. Complete the drawing shown in Fig. to indicate where the free ends of the two wires should be joined to make the bulb glow.
Ans: The given circuit is not complete. To complete the circuit, the positive terminal of the cell should be connected to one end of the switch, and the other terminal of the bulb should be connected to the other end of the switch. The closed circuit is shown in the following figure:
Q8. What is the purpose of using an electric switch? Name some electrical gadgets that have switches built into them.
Ans: A switch is an electric device that is used to complete or break an electric circuit. If the switch is ‘ON’, then a current can flow through the circuit. However, if the switch is ‘OFF’, then the current cannot flow through the circuit. Electrical appliances such as table fans, electric lamps, washing machines, juicers and mixers, TV, radio, etc. have switches built into them.
Q9. Would the bulb glow after completing the circuit shown in Fig. if instead of safety pin we use an eraser?
Ans:Erasers are bad conductors of electricity. They do not conduct electricity. The circuit becomes an open circuit. Hence, the bulb will not glow if a safety pin is replaced with an eraser.
Q10. Would the bulb glow in the circuit shown in Fig.?
Ans: The bulb will not glow. This is because the two terminals of the cell are connected to the single terminal of the bulb. This is equivalent to the bulb not being connected in the circuit at all. The two terminals of the battery should be connected to the two terminals. Of the cell.
Q11. 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: When the two free ends of a conductor tester are touched with an object, then the bulb of the tester would glow if the object conducts electricity. However, the bulb would not glow if the object does not conduct electricity. Since the bulb glows when the tester is touched with the object, the object must conduct electricity.
Hence, the object is a conductor.
Q12. Why should an electrician use rubber gloves while repairing an electric switch at your home? Explain.
Ans: An electric switch is an electrical appliance. It conducts electricity through its internal parts. When its internal parts are touched with naked hands, then it may cause an electric shock. Therefore, it should be touched with rubber gloves in hand because rubber cannot conduct electricity. Hence, electricians wear rubber gloves while repairing a switch or any other electrical appliance.
Q13. 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: Rubber is a bad conductor of electricity. It does not allow current to flow through it. Hence, handles of tools such as screwdrivers, pliers, etc. which are used by electricians for repair work usually have plastic or rubber cover on them. This protects them from electric shock.
FAQs
1. What is Electricity?
Electricity is a form of energy that we use to power various devices and appliances. It flows through conductors and can be used for lighting, heating, and running motors.
2. What is an Electric Circuit?
An electric circuit is a path through which electricity flows. It typically includes a power source (like a battery), conductors (like wires), and a device that uses electricity (like a bulb).
3. What are Conductors and Insulators?
Conductors are materials that allow electricity to flow through them easily, like copper and aluminum. Insulators are materials that do not allow electricity to pass through them easily, such as rubber and plastic.
4. Why is a Switch Used in an Electric Circuit?
A switch is used in an electric circuit to control the flow of electricity. It can turn the electricity on or off, or change the path it takes.
5. Can Electricity Flow Through an Open Circuit?
No, electricity cannot flow through an open circuit. For electricity to flow, the circuit must be closed and complete without any breaks.
6. What is a Battery and How Does it Work in a Circuit?
A battery is a device that stores chemical energy and converts it into electrical energy. In a circuit, it provides the power needed for electricity to flow.
7. What are Series and Parallel Circuits?
In a series circuit, components are connected one after another, so the same current flows through each component. In a parallel circuit, components are connected across common points, so the current can split and flow through different paths.
8. Why Do Bulbs in a Circuit Sometimes Not Light Up?
Bulbs in a circuit might not light up if the circuit is open, the bulb is burnt out, the battery is dead, or if there is a loose connection.
9. What Safety Precautions Should We Follow When Dealing with Electricity?
Always handle electrical devices with dry hands, do not touch bare wires, do not overload sockets, and ensure that water is kept away from electrical appliances for safety.
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