A coil of resistance 400 Omega is placed...

A coil of resistance 400 `Omega` is placed in a magnetic field. If the magnetic flux `phi` (Wb) linked with the coil varies with time t (s) as `phi = 50t_2 + 4`. The current in the coil at t=2 s is

A

0.5 A

B

0.1 A

C

`2 A`

D

`1 A`

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The correct Answer is:

A

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