Question

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

• A. 7.25 V
• B. 3.75 V
• C. 1.25 V
• D. 2.52 V

Answer 1

Answer: (D)

2.52 V

Answer 2

$e = Bvl \Rightarrow e = 0.9 \times 7 \times 0.4 = 2.52\mspace{6mu} V$