In an a.c. generator, a coil of turns is rotated in a magnetic field of strength, ,…

PHYSICS · Single correct · CBSE · Physics · Electromagnetic Induction · Electromagnetic Induction

Problem

In an a.c. generator, a coil of

N

turns is rotated in a magnetic field of strength,

B

, at an angular frequency,

\omega

, to produce a peak voltage,

V

. If the coil's turns are changed to

2N

, the magnetic field strength is changed to

2B

and the angular frequency is changed to

2\omega

, what will the peak voltage be? (1)

\frac{V}{4}

(2)

V

(3)

4V

(4)

8V