Question

A uniform magnetic field is restricted within a region of radius r the magnetic field changes with time at a rate of 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 :-

Answer 1

Correct option (2)

Explanation:

For Loop 1

For Loop 2,ɛ_ind=0    as no flux linkage