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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
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- For a thermocouple, the neutral temperature is 270⁰C when its cold junction is at 20⁰C.
- A simple pendulum has a time period T₁ when on the earth’s surface and T₂ When taken
- The magnetic susceptibility of a material of a rod is 449. Permeability of vaccum
- A planet in a distinct solar system is 10 times more massive than the earth
- A galvanometer is converted into an ammeter by connecting
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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