Electrical Engineering Mcqs

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 ?

(A)  ωB/r22-r12/Δt

(B)  ωB(r2-r1)2/Δt

(C)  ωB(r22-r12)/Δt

(D)  ωB(r22+r12)/Δt

Submitted By :Ali Uppal

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