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The two rails of a railway track, insula...

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 milli voltmeter when a train travels at a speed of `180 km//hours` along the track, given that the vertical components of earth's magnitic field is `0.2xx10^(_4) weber//m^(2)` & the rails are separated by 1 meter?

A

`10^(-2)` volt

B

`10^(-4)` volt

C

`10^(-3)` volt

D

1 volt

Text Solution

Verified by Experts

The correct Answer is:
C
`e=Blv =0.2 xx10^(-4) xx 1 xx 180 xx5/18 =10^(-3)V`
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