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Power generated across a uniform wire co...

Power generated across a uniform wire connected across a supply is `H`. If the wire is cut into `n` equal parts and all the parts are connected in parallel across the same supply, the total power generated in the wire is

A

`H/(n^(2))`

B

`n^(2)H`

C

`nH`

D

`H/n`

Text Solution

Verified by Experts

The correct Answer is:
B

`H=(V^(2))/R…(1)`
`H'=n((v^(2))/(R//n))=n^(2)(V^(2))/R…(2)`
From `(1)` and `(2)`
`H'=n^(2)H`
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