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A potentiometer wire of length L and a resistance r are connected in series with a battery of e.m.f. E₀ and a resistance r₁. An unknown e.m.f. E is balanced at a length l of the potentiometer wire. The e.m.f. E will be given by
Options
(a) E₀l/L
(b) LE₀r/(r+r₁)l
(c) LE₀r/lr₁
(d) E₀r/(r+r₁) l/L
Correct Answer:
E₀r/(r+r₁) l/L
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
- Two identical capacitors are first connected in series and then in parallel.
- The angle of a prism is A. One of its refracting surfaces is silvered
- A coin of mass m and radius r having moment of inertia I about the axis passes
- An object is placed 30 cm away from a convex lens of focal length 10 cm and a sharp
- A source is moving towards an observer with a speed of 20 m/s and having frequency
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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