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A uniform magnetic field B exists in a d...

A uniform magnetic field B exists in a direction perpendicular to the plane of a square frame made of copper wire. The wire has a diameter of 2 mm and a total length of 40cm. The magntic field changes with time at a steady rate `(dB)/dt = 0.02 T s ^(-1)`. Find the current induced in the frame. Resistivity of copper `=1.7 X 10 ^(-8) Wm`.

A

0.1A

B

0.2A

C

0.3A

D

0.4A

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The correct Answer is:
A
0.1A
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