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A coil of area 500cm^(2) and having 1000...

A coil of area `500cm^(2)` and having `1000` turns is held perpendicular to a uniform field of `0.4` gauss. The coil is turned through `180^(@)` in `1//10sec` . Calculate the average induced e.m.f.

A

0.02 V

B

0.05 V

C

0.06 V

D

0.07 V

Text Solution

Verified by Experts

The correct Answer is:
A
`e = (- d phi)/(dt) = (-BA cos 180^@)/(t)`
`= (0.4 xx 10^(-4) xx 500 xx 10^(-4) xx (-1) xx 1000)/(1//10)`
`= 0.4 xx 500 xx 10 xx 10^(-8) xx 1000`
`= 2000 xx 10 xx 10^(-9) xx 1000`
`= 0.02 V`
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