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A horizontal straight wire 20 m long ext...

A horizontal straight wire 20 m long extending from east to west falling with a speed of `5.0 m//s`, at right angles to the horizontal component of the earth’s magnetic field `0.30 × 10^(–4) Wb//m^(2)`. The instantaneous value of the e.m.f. induced in the wire will be

A

3mV

B

4.5 mV

C

1.5 mV

D

6.0 mV

Text Solution

Verified by Experts

The correct Answer is:
A

`epsilon_("ind")=Bvl`
`=0.3xx10^(-4)xx5xx20`
`=3xx10^(-3)V=3 mV`.
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