Which of the following is not an insulator?
Important Questions on Electricity and Circuits
Which of the following is a conductor of electricity?
Which of the following is involved in the working of a torch bulb?
The cells/batteries which can be recharged are usually those used in:
A. Electric clocks B. Mobile phones C. Cameras D. T.V. remotes
The coloured plastic covering on an electric wire makes the electric wire:
A torch bulb which normally works on
The positive terminal of an electric cell was connected to a torch bulb fitted in a bulb holder. The other end of bulb holder was connected to a crocodile clip. The negative terminal of cell was connected to another crocodile clip by a wire. When a material X was held between the two free ends of the crocodile clips, the bulb did not glow but when another material Y was held between the two free ends of the crocodile clips, the bulb started glowing.
What is the general name of the materials like (i) X, and (ii) Y?
