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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:
No explanation available. Be the first to write the explanation for this question by commenting below.
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Topics: Current Electricity
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Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A block of mass 10 kg is moving in X-direction with a constant speed of 10 ms⁻¹
- A car of mass m is moving on a level circular track of radius R
- A stone of mass 1 kg tied to a light inexensible string of length L=10/3 is whirling
- A mixture consists of two radioactive materials A₁ and A₂ with half lives of 20s
- Two satellites of earth, S₁ and S₂ are moving in the same orbit. The mass of S₁
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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