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A current i passes through a wire of len...

A current i passes through a wire of length l , radius of cross-section r and resistivity `rho` . The rate of heat generation is

A

`(i^(2)l rho)/(pi r^(2))`

B

`i^(2)((l rho)/(pi r^(2)))^(2)`

C

`i^(2)l rho//r`

D

`i l rho//r`

Text Solution

Verified by Experts

The correct Answer is:
A
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