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A potentiometer circuit has been set up for finding the internal resistance of a given cell. The main battery, used across the potentiometer wire, has an emf of 2.0V and a negligible internal resistance. The potentiometer wire itself is 4m long. When the resistance R connected across the given cell, then has values of
(i) infinity (ii) 9.5Ω
The balancing lengths of the potentiometer wire are found to be 3m and 2.85m, respectively. The value of internal resistance of the cell is
Options
(a) 0.25Ω
(b) 0.95Ω
(c) 0.5Ω
(d) 0.75Ω
Correct Answer:
0.5Ω
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
- Tangent galvanometer is used to measure
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- The equivalent resistance of two resistors connected in series is 6 Ω
- If by mistake voltmeter is connected in series and ammeter in parallel then
- A planet in a distinct solar system is 10 times more massive than the earth
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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