Question

A disc of radius 0.1 m is rotating with a frequency 10 rev/s in a normal magnetic field of strength 0.1 T. Net induced emf is

• A. $2\pi\times10^{-2}V$
• B. $\pi\times10^{-2}V$
• C. $\frac{\pi}{2}\times10^{-2}V$
• D. None of these

Hint:

A disc of radius 0.1 m is rotating with a frequency 10 rev/s in a normal magnetic field of strength 0.1 T. Net induced emf is

Answer 1

The Correct Option is B