Questions
From the diagram, it can be calculated that the resistivity of the material of the rod is :
detailed solution
Correct option is D
R=ρlA=VI⇒ρ=AVlI=π0.1 x 10-22 x 401.5 x 3Ω-m=2.8 x 10-5Ω-mTalk 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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