A rectangular loop of length 2.5 m and width 2 m is placed at 60° to a magnetic field of 4 T. The loop is removed from the field in 10 sec. The average emf induced in the loop during this time is
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A rectangular loop of length 2.5 m and width 2 m is placed at 60° to a magnetic field of 4 T. The loop is removed from the field in 10 sec. The average emf induced in the loop during this time is

G1 Physics · Accepted Answer

Average induced emf, Eₐᵥg = -ΔΦ/Δt Initial flux: Φᵢ = BA cos60° = 4 × 2.5 × 2 × 1/2 = 10 Wb Final flux: Φf = 0 Therefore, Eₐᵥg = -(0 - 10)/10 = +1 V Correct option: C.