MCQ Class 7 Science Chapter 10 Electric Current and its Effects

1. The soft-iron core of an electromagnet loses its magnetism on the current passing through the electromagnetic coil stops because.

2. The bulb glows only when ................. flows through it.

3. An element measure the potential difference between two points in an electric circuit is:

4. A device which prevents or allows the current to flow through it

5. Electric current has energy called:

6. If a piece of soft iron is placed inside the coil n number of turns and current is passed in the coil from a battery, what name is then given to the device so obtained ?

7. In a bulb there is a thin wire called

8. A glowing bulb becomes warm due to the

9. When electric current passes through a wire, it behave like a

10. Coils of heating devices are made up of