Two metal wires of identical dimensions are connected in series. If \sigma_1 and \sigma_2 are the conductivity of the combination is [NEET 2015]

Correct Answer is : 2σ1σ2σ1+σ2

\frac{\sigma_1+\sigma_2}{\sigma_1 \sigma_2}

\frac{\sigma_1 \sigma_2}{\sigma_1+\sigma_2}

\frac{2 \sigma_1 \sigma_2}{\sigma_1+\sigma_2}

\frac{\sigma_1+\sigma_2}{2 \sigma_1 \sigma_2}

NEET 2015 Physics and Chemistry Paper

Question : 29 of 91

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Two metal wires of identical dimensions are connected in series. If σ1 and σ2 are the conductivity of the combination is

[NEET 2015]

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