Question

A coil of wire is placed in a changing magnetic field. If the number of turns in the coil is decreased, the voltage induced across the coil will

• A. increase
• B. decrease
• C. remain constant
• D. be excessive

Answer 1

Answer: (B)

decrease

Voltage induced in the coil is given by $|E|=N\frac{d\varphi }{dt}$
where $N$ is the number of turns in the coil.
So induced voltage will get decreased on decreasing the number of turns in the coil.