Question

In which of the following cases does the electromagnetic induction occur? 

i) A current is started in a wire held near a loop of wire. 

ii) The current is stopped in a wire held near a loop of wire. 

iii) A magnet is moved through a loop of wire. 

iv) A loop of wire is held near a magnet.

Answer 1

In first three cases there is a change in magnetic flux. So electromagnetic induction occurs in first three cases