Two metal wires of identical dimensions are connected in series. If σ₁ and σ₂ are

Two Metal Wires Of Identical Dimensions Are Connected In Series Physics QuestionTwo Metal Wires Of Identical Dimensions Are Connected In Series Physics Question

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

Options

(a) σ₁+ σ₂/σ₁ σ₂
(b) σ₁ σ₂/σ₁+ σ₂
(c) 2σ₁ σ₂/σ₁+ σ₂
(d) σ₁+ σ₂/2σ₁ σ₂

Correct Answer:

2σ₁ σ₂/σ₁+ σ₂

Explanation:

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