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please help electricity??????????????????

Asked by 17th August 2008, 8:19 PM
Answered by Expert
Answer:

the resistance will become 16 times ,hence new resistance will be 32ohms,

volume of the wire will remain constant therefore

 l A = l' A'

A/A' = l' / l = 4 , where A is the original area of crossecition, A' new area of crossesection,l is original lenght, l' is new lenght.

Answered by Expert 18th August 2008, 7:39 AM
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