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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 position vector of a particle R as a function of time is given by
- The ionisation energy of hydrogen is 13.6 eV. The energy of the photon released
- Charge Q is divided into two parts which are then kept some distance apart. The force
- In a uniform circular motion, work done in one complete rotation is
- A body of mass 1.0 kg is falling with an acceleration of 10 ms⁻².
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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