On what factors does the resistance of a conductor depend ?

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On what factors does the resistance of a conductor depend ?

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The resistance ( R) of a conductor depends upon :
(i) its length (l) where R prop l.
(ii) its cross-sectional area (A) where R prop 1//A.
(iii) resistivity (rho) of its material where R prop rho. Thus, R = rho l//A.