Question

In a region of magnetic induction B = 10^-2 tesla, a circular coil of radius 30 cm and resistance π² ohm is rotated about an axis which is perpendicular to the direction of ,B and which forms a diameter of the coil. If the coil rotates at 200 rpm the amplitude of the alternating current induced in the coil is

(a) 4π² mA

(b) 30mA

(c) 6 mA

(d) 200 mA

Answer 1

Correct option  (c) 6 mA

Explanation:

Substituting these values and solving, we get I₀ =6 x 10^-3 A= 6 mA