Question

For the following devices:

I: Fuse

II: Electric Bulb

III: Electric Bell

Select the correct option.

• A. I and III work on the principle of magnetic effect of current.
• B. I and II work on the principle of heating effect of current.
• C. II and III work on the principle magnetic effect of current.
• D. III works on the principle heating effect of current.

Answer 1

The correct option is B

I and II work on the principle of heating effect of current.

Fuse and electric bulb works on the principle of heating effect of current, while electric bell works on the principle of magnetic effect of current.