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

A square wire loop with 2 m sides in perpendicular to a uniform magnetic field, with half the area of the loop in the field. The loop contains a 20 V battery with negligible internal resistance. If the magnitude of the field varies with time according to `B = 0.042 – 0.87` t, with B in tesla & t in sec.
What is the total emf in the circuit ?

Text Solution

Verified by Experts

The correct Answer is:
`21.74 V`
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Knowledge Check

  • 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 ?

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