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A current I is passing through a wire ha...

A current `I` is passing through a wire having two sections `P` and `O` of uniform diameters `d` and `d//2` respectively. If the mean drift velocity of electrons in section `P` and `Q` is denoted by `v_(P)` and `v_(Q)` respectively, then

A

`v = v`

B

`v = (1)/(2)v`

C

`v = (1)/(4)v`

D

`v = 2v`

Text Solution

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The correct Answer is:
C
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ERRORLESS -CURRENT ELECTRICITY-Self Evaluation Test -19
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