NCERT class 6 Chapter 9। Electricity and Circuits। English Medium

 Electricity and Circuits

Chapter 9

1. Fill in the blanks :

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

(b) An electric cell has _______________ terminals.

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

(a) Electric current can flow through metals.

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(b) Instead of metal wires, a jute string can be

used to make a circuit.

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(c) Electric current can pass through a sheet

of thermo Col.

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3. Explain why the bulb would not glow in the

arrangement shown in Fig. 9.13.

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4. Complete the drawing shown in Fig. 9.14 to

indicate where the free ends of the two wires

should be joined to make the bulb glow.

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5. What is the purpose of using an electric switch?

Name some electrical gadgets that have switches

built into them.

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6. Would the bulb glow after completing the circuit

shown in Fig. 9.14 if instead of safety pin we

use an eraser?

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7. Would the bulb glow in the circuit shown in Fig. 9.15?

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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.

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9. Why should an electrician use rubber gloves while repairing an electric switch

at your home? Explain.

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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?

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