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Magnetic flux phi (in weber) linked with...

Magnetic flux `phi` (in weber) linked with a closed circuit of resistance `10 ohm` varies with time `t` (in seconds) as
`phi=5t^(2)-4t+1`
The induced electromotive force in the circuit at `t=0.2` sec. is

A

`0.4` volt

B

`-0.4` volt

C

`-2.0` volt

D

`2.0` volt

Text Solution

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The correct Answer is:
D
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