Questions
Statement 1: When the length of a conductor is stretched to double, its resistance will also get doubled.
Statement 2: Resistance is inversely proportional to the length of a conductor.
detailed solution
Correct option is D
R= ρ lAwhen l=2l, A=A/2Because volume V1 = V2 .∴ R' = 4ρlATalk to our academic expert!
Similar Questions
In an electrical cable there is a single wire of radius 9 mm of copper. Its resistance is 5Ω . The cable is replaced by 6 different insulated copper wires, the radius of each wire is 3 mm . Now the total resistance of the cable will be
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