Question

What happens if you move a magnet near a coil of wire? A. Current is induced. B. Power is consumed. C. The coil becomes magnetized. D. The magnet's field is reduce

Answer 1

There is a voltage that appears between the ends of the wire. If the ends of the wire are connected, or there is a conductor between the both of them, then a current will flow in the wires. Hope it helps

Answer 2

If you move a magnet near a coil of wire then the current is induced.

Option A is correct.

Step-by-step explanation:

According to Faraday's law of induction

If we move a magnet near a coil of wire then an emf (electromotive force) is induced in the wire which produces current in it. The induced emf is linked to the rate of change of the magnetic flux linked with the coil.

The induced emf is given by:

`\epsilon =- (N d\phi)/(dt)`

Where,
`\phi` = magnetic flux

`\epsilon = -(N d(BA))/(dt)`

Where, B = magnetic field

A = area of coil

N = number of turns

Hence, If you move a magnet near a coil of wire then the current is induced.