CBSE Class 10 Answered
please help electricity??????????????????
Asked by | 17 Aug, 2008, 08:19: PM
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 | 18 Aug, 2008, 07:39: AM
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