A wire of resistance R is stretched to thrice of its original length, what is its new resistance ? |
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(a) |
9 R |
(b) |
(c) |
(d) |
A wire of resistance R is stretched to thrice of its original length, what is its new resistance ? |
|||||||
(a) |
9 R |
(b) |
(c) |
(d) |