The resistance R of a conductor of length L and area of cross – section A carrying a current I is given by: a) R=pA/L, where p=specific resistance b) R = VI, where V = potential different c) R = σA, where σ = electrical conductivity d) R = 2mL/ne 2 τA. Where τ = relaxation time, n the electron density e the electronic charge and m is the mass of an electron

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The resistance R of a conductor of length L and area of cross – section A carrying a current I is given by: a) R=pA/L, where p=specific resistance b) R = VI, where V = potential different c) R = σA, where σ = electrical conductivity d) R = 2mL/ne 2 τA. Where τ = relaxation time, n the electron density e the electronic charge and m is the mass of an electron
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