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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
- The radius of curvature of a convave mirror is 24 cm and the imager is magnified
- Radioactivity of a sample at T₁ time is R₁ and at time T₂ is R₂. If half-life
- A particle is executing a simple harmonic motion. Its maximum acceleration
- A man of 50 kg mass is standing in a gravity free space at a height
- Potentiometer measures the potential difference more accurately than a voltmeter
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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