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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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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The frequency of an alternating voltage is 50 cycles per second and its amplitude
- The focal lengths of a converging lens are fᵥ and fᵣ for violet and red lights
- For a parallel beam of monochromatic light of wavelength λ diffraction is produced
- If the electric field lines is flowing along axis of a cylinder, then the flux
- A solenoid 1.5 m long and 0.4 cm in diameter possesses 10 turns per cm length
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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