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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 component of the earth’s magnetic field is `0.2 xx 10^-4 T`, the emf induced in the axle 1.5 m long is

A

5.4 mV

B

54 mV

C

15 mV

D

1.5 mV.

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