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A straight conductor of uniform cross-se...

A straight conductor of uniform cross-section carries a current `I`. Let `s=` specific charge of an electron. The momentum of all the free electrons per unit length of the conductor, due to their drift velocity only, is

A

`Is`

B

`I//s`

C

`sqrt(I//s)`

D

`(I//s)^(2)`

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The correct Answer is:
B
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