Question

Turning a magnet very quickly would be BEST used to create A) radiation. Reactivate B) light waves. Reactivate C) an electric current. D) a convection current.

Answer 1

Answer: C) an electric current

Step-by-step explanation:

Changing magnetic field induces electromotive force which results in electric current to flow in conducting wire.

From Faraday's Law:

induced emf,

`e = -N (\Delta B A)/(\Delta A)`

Thus, when magnet is quickly turned, a change in magnetic field would produce an electric current.

Answer 2

Turning a magnet very quickly would be BEST used to create an electric current

Step-by-step explanation:

In Electromagnetic waves electric field produces magnetic field and vice versa. A moving magnet can produce electric current. Dynamo is the best example for it. In dynamo armature is rotated between the magnets which results in the development of electric field and hence an electric current is produced in it.