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The armature coil of an a.c. generator h...

The armature coil of an a.c. generator has 1000 turns, each of area `2m^(2)`. It was rotating in a uniform magnetic field of B=0.2 T at an angular speed of `60 rad//s`. It was found that in a certain position of the coil, the current in the circuit become zero. What is the displacement current through this area?

A

200 Wb

B

250 Wb

C

300 Wb

D

400 Wb

Text Solution

Verified by Experts

The correct Answer is:
D
For the A.C. generator,
Flux `phi = NAB cos omega t and I = I_(0) sin omega t`
When `I=0, sin omega t = 0 or omega t =0`
and then `phi = NAB cos 0^(@)`, I is maximum.
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MARVEL PUBLICATION-ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENTS -TEST YOUR GRASP - 16
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