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A rectangular coil of 20 turns and area ...

A rectangular coil of `20` turns and area of cross-section `25 cm^(2)` has a resistance of `100 ohm`. If a magnetic field which is perpendicular to the plane of the coil changes at the rate of `1000` tesla per second, the current in the coil is

A

1.0 ampere

B

50 ampere

C

0.5 ampere

D

5.0 ampere

Text Solution

Verified by Experts

The correct Answer is:
C
`(dB)/dt=1000T//sec`
`|e|=N(dvarphi)/dt=NA(dB)/dt=20xx25xx10^(-4)xx1000=50`
`I=e/R=50/100=0.5A`.
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