a question of electromagnetics

A conducting loop of radious R is placed in a uniform ,tranverse magnetic field region of strength B.
radious of the loop is increasing with time as r=r0. Induced emf in the loop varies with time as
(center of the loop coinsides with axis of magnetic field region)

1 Answers

62
Lokesh Verma ·

Is the magnetic field inside a circular region or goes to infinity?

The flux through the loop will be pi (r0t)2 x B

rate of change will be 2 pi r02 t B

which is directly prop to t

I have assumed that what you wanted to say is r=r0t.

Hence the correct answer will be d

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