A metre gauge train is heading north with speed 54 km/h in the Earth’s magnetic field 3 × 10-4 T. The emf induced across the axle joining the wheels is
A. 0.45 mV
B. 4.5 mV
C. 45 mV
D. 450 mV.
Answer:B
A metre gauge train is heading north with speed 54 km/h in the Earth’s magnetic field 3 × 10-4 T. The emf induced across the axle joining the wheels is
A. 0.45 mV B. 4.5 mV C. 45 mV D. 450 mV.