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There is a current of 1.344 amp in a cop...

There is a current of 1.344 amp in a copper wire whose area of cross-section normal to the length of the wire is `1 mm^(2)`. If the number of free electrons per `cm^(2)` is `8.4 xx 10^(22)` then the drift velocity would be

A

1.0 mm per sec

B

1.0 metre per sec

C

0.1 mm per sec

D

0.01 mm per sec

Text Solution

Verified by Experts

The correct Answer is:
C
`l=n eAV_(d)`
`V_(d)=(1)/(n e A)`
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