Question

A flat coil, C, of n turns, area A and resistance R is placed in a uniform magnetic field of magnitude B. The plane of the coil is initially perpendicular to B. If the coil is rotated by an angle θ about the axis XY, charge of amount Q flows through it.

(a) If θ = 90°, Q = BAn/R.

(b) If θ = 180°,Q = BAn/R.

(c) If θ = 180°,Q = 0.

(d) If θ = 360°,Q = 0.

Answer 1

Correct Answer is: (a) If θ = 90°, Q = BAn/R, (b) If θ = 180°,Q = BAn/R, (d) If θ = 360°,Q = 0.