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A square wire loop with 2 m sides is per...

A square wire loop with 2 m sides is perpendicular to a uniform magnetic field, with half the area of the loop in the field (see Fig.) The loop contains a 20 V battery with negligible internal resistance. If the magnitude of the field varies with time according to `B = (2 + 5t)`, with B in tesla and t in second.

What is the total emf in the circuit ?

A

10 V

B

20 V

C

30 V

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
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