Mark ‘True’ or ‘False’ for 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.

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

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?

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

Would the bulb glow after completing the circuit shown in the figure in the given below if instead of safety pin we use an eraser?

Mark ‘True’ or ‘False’ for 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.

Explain why the bulb would not glow in the arrangement shown in the figure.

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

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

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