Q. 5

A cylindrical con

Answer :

Parameters of cylinder A: Length = l, Area of cross-section = A, Resistance = R and resistivity = ρ

Parameters of cylinder B: Length = 2l, Area of cross-section = A’ (To be calculated); Resistance = R and resistivity = ρ

Resistance of cylinder A can be written as, (1)

Resistance of cylinder A can be written as, (2)

Dividing 1 and 2,

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