A uniform magnetic field is restricted within a region of radius r. The magnetic field changes with time at a rate dB/dt. Loop 1 of radius R > r encloses the region r and loop 2 of radius R is outside the region of magnetic field as shown in the figure below. Then the e.m.f. generated is - VgyanHub

Question:

A uniform magnetic field is restricted within a region of radius r. The magnetic field changes with time at a rate dB/dt. Loop 1 of radius R > r encloses the region r and loop 2 of radius R is outside the region of magnetic field as shown in the figure below. Then the e.m.f. generated is

Options :

(a) -dB/dt πr2 in loop 1 and zero in loop 2
(b) Zero in loop 1 and zero in loop 2
(c) dB/dt πr2 in loop 1 and dB/dt πr2 in loop 2
(d) -dB/dt πR2 in loop 1 and zero in loop 2

Answer :

(a) -dB/dt πr2 in loop 1 and zero in loop 2

Answer Steps :

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