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A metal rod of length 1m is rotated abou...

A metal rod of length 1m is rotated about one of its ends in a place at right angle to a uniform magnetic field of induction `5xx10^(-3)` T. if it makes 1800 rotations per minute, then the emf iniduced between its ends is

A

0.471 V

B

4.71 V

C

4.17 V

D

1.47 V

Text Solution

Verified by Experts

The correct Answer is:
A
`e=BA f=Bpir^(2)f=Bpil^(2)f`
`=5xx10^(-3)xx3.14xx1xx30=0.471V`
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