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A train is moving towards north with a s...

A train is moving towards north with a speed of 180 kilometre per hour. If the vertical comonent of the earth's magnetic field is `0.2xx10^(-4)` T, the emf induced in the axle 1.5 m longs is -

A

5.4 mV

B

54 mV

C

15 mV

D

1.5 mV

Text Solution

Verified by Experts

The correct Answer is:
D
Distance covered per second `=(180xx1000)/3600=50m`
Area covered per second `=1.5xx50=75m^2`
e.m.f `=1.2xx10^-4xx75=1.5mV`
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