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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 volts

B

`-0.4 "volts"`

C

`-2.0 "volts"`

D

`2.0 "volts"`

Text Solution

Verified by Experts

The correct Answer is:
D
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