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Answers
Answer 8.
The important safety rules we must follow while using electricity are
1. We must check whether the wire of the appliances are properly insulated.
2. We must not use any metal thing to operate the mother board of different appliances.
3. We should wear rubber gloves and boots when we are working or repairing any electrical fault
4. We should not touch the metal wire or appliances bare-handedly.
Answer 9.
An activity to show that air is a bad conductor of electricity or insulator.
Make an apparatus to glow a bulb. And if the bulb glow, cut the wire anywhere. And you will observe that the bulb will not glow. This experiment shows that air is the bad conductor of electricity.
Answer 10.
A torch bulb is made up of spherical glass which is attached to a metallic base. There is a filament inside the bulb. The filament is attached to two wires. One of the wires is attached to that metallic base of the bulb, another wire is attached to the side of the metallic portion of the bulb. The side of the bulb is the negative pole while the bottom is the position. Torch bulb live pole.
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