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A coil of resistance 400Omega is placed ...

A coil of resistance `400Omega` is placed in a magnetic field. If the magnetic flux `phi` (wb) linked with the coil varies with time `t` (sec) as `f=50t^(2)+4`, the current in the coil at `t=2` sec is

A

0.5 A

B

0.1 A

C

2A

D

1A

Text Solution

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The correct Answer is:
a
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