Question

A straight line conductor of length 0.4 m is moved with a speed of 7 m/s perpendicular to a magnetic field of intensity 0.9 Wb/$m^2$. The induced e.m.f. across the conductor is

• A. 5.04 V
• B. 25.2 V
• C. 1.26V
• D. 2.52V.

Answer 1

Answer: (D)

Length of conductor (I) = 0.4 m;
Speed = 7 m/s and magnetic field (B) = 0.9 Wb/$m^2$.
Induced e.m.f. $(\in )=Blv=0.9\times 0.4\times 7=2.52V$.