PDF chapter test TRY NOW
A home-made torch:
- Take a torch bulb and a piece of wire.
- Remove the plastic covering at the two ends of the wire as you did before.
- Wrap one end of a wire around the base of an electric bulb as shown in figure.
- Fix the other end of the wire to the negative terminal of an electric cell with a rubber band.
- Now, bring the tip of the base of the bulb, that is, its other terminal in contact with the positive terminal of the cell.
Circuit arrangement
Does the bulb glow?
.
Now move the bulb away from the terminal of the electric cell. Does the bulb remain lighted?
.
Register for free to see more content