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A long straigth wire of resistance R, ra...

A long straigth wire of resistance `R`, radius `a` and length `l` carries a constant current `I`.The poynting vector for the wire will be

A

`(IR)/(2pial)`

B

`(IR^(2))/(al)`

C

`(I^(2)R)/(al)`

D

`(I^(2)R)/(2pial)`

Text Solution

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The correct Answer is:
D
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