Answers

2016-04-26T22:31:44+05:30
Resistance is directly proportional to Length/Area of cross section.
Therefore if length is doubled then resistance will become double and then as area is inversely proportional to resistance. So if resistance increases than area is decreased. Resistance become twice than area become 1/2.
R=constant ×L/A
if L is doubled
2R=constant ×2L/(A/2)
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