Question

If a magnet is put inside one coil of wire a voltage is produced. What will happen if the magnet is put inside two coils of wire

Answer 1

The choices can be found elsewhere and as follows:

A)There will not be a change. 
B)The voltage will decrease by a factor of two. 
C)The voltage will increase by a factor of two. 
D)The two coils of wire will cancel out the magnetic field. 
E)The voltage will be zero.

I believe the answer is option C. If the magnet is put inside two coils of wire, then the  voltage will increase by a factor of two. Hope this answers the question.