Question

A straight line conductor of length 0.4 m is moved with a speed of 7m/s perpendicular to a magnetic field of intensity 0.9 Wb/m² . The induced e. m. f. across the conductor is. 

(a) 5.04 V

(b) 25.2 V

(c) 1.26 V

(d) 2.52

Answer 1

(d) 2.52 

Induced e.m.f (s) = B/V

= 0.9 × 0.4 × 7 = 2.52 V.