A coil of wire is arranged with its plan perpendicular to a uniform magnetic field o flux density B. when the radius of the coil increases from r1 to r2 in time ?t then what is the emf induced in the coil?

Question:
A coil of wire is arranged with its plan perpendicular to a uniform magnetic field o flux density B. when the radius of the coil increases from r1 to r2 in time ?t then what is the emf induced in the coil?

1.?B/r22-r12/?t

2.?B(r2-r1)2/?t

3.?B(r22-r12)/?t

4.?B(r22+r12)/?t

Posted Date:-2021-08-29 22:46:22


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