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the resistance is made by connecting two wires of same material of radii 2mm and 5mm nd length 8cm and 5cm the potential difference of 22Vis applied to them the potential difference on the longer wire is

raghav , 7 Years ago
Grade 12
anser 1 Answers
Khimraj

Last Activity: 7 Years ago

Resistance of wire is given by
R \propto l/A
SO
R1/R2 = (l1/l2)*(r2/r1)2 = (8/5)*(5/2)2 = 10.
So potential across R1
= 22*10/11 = 20V.
Hope it clears. If you like answer then please approve it.

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