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

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Academy of PakistanTest & Learning

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1762Electrical EngineeringMedium

AωB(r2-r1)2/Δt

BωB/r22-r12/Δt

Correct answer

B. ωB/r22-r12/Δt

Explanation

The correct answer is ωB/r22-r12/Δt.

A coil of wire is arranged with its plane perpendicular to a uniform magnetic field o flux density B. when the radius of the coil increases from r1 to r2 in time Δt then what is the emf induced in the coil? - Answer and Explanation | Academy of Pakistan