Question

The two rails of a railway track, insulated from each other and the ground, are connected to millivoltmeter. What is the reading of the millivoltmeter when a train passes at a speed of 180 km/hr along the track, given that the vertical component of earth’s magnetic field is 0.2 × 10^–4 wb/m² and rails are separated by 1 metre ______.

Options

• 10^-2 volt

• 10 mV

• 1 volt

• 1 mV

Answer 1

The two rails of a railway track, insulated from each other and the ground, are connected to millivoltmeter. What is the reading of the millivoltmeter when a train passes at a speed of 180 km/hr along the track, given that the vertical component of earth’s magnetic field is 0.2 × 10^–4 wb/m² and rails are separated by 1 metre 1 mV.