A wire is moving with velocity 12xx10^(-...

A wire is moving with velocity `12xx10^(-2)`m/s in a magnetic field of 0.5 T. if the induced emf is 9 mV, the length of wire is

A

150 cm

B

15 cm

C

1.5 cm

D

0.15 cm

Text Solution

Verified by Experts

The correct Answer is:

B

`l=(e)/(Bv)`
`=(9xx10^(-3))/(0.5xx12xx10^(-2))=15cm`

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