A conducting loop of face-area A and resistance R is placed perpendicular to a magnetic field B. The loop is withdrawn completely from the field. Find the charge which flows through any cross-section of the wire in the process. Note that it is independent of the shape of the loop as well as the way it is withdrawn.

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1 Answers

Area = A, Resistance = R, B = Magnetic field

ϕ = BA = Bacos0° = BA

e = dϕ/dt = BA/1 ; i = e/R = BA/R

ϕ = iT = BA/R

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