The two rails of a railway track insulated from each other and the ground are connected to a milli voltmeter. What is the reading of the meter, when a train passes at a speed of 180 kmh −1 along the track, given that the vertical component of earth’s magnetic field is 0.2 × 10−4Wbm−2 and rails are separated by 1m?
i. 10 mV
ii. 1mV
iii. 100mV
iv. 0.1mV
