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A cell of emf E and internal resistance r supplies current for the same time t through external resistance R₁ and R₂ seperately. If the heat developed in both the cases is the same, then the internal resistance r will be
Options
(a) r=√R₁+R₂
(b) r=√R₁xR₂
(c) r=R₁+R₂/2
(d) r=1/R₁+1/R₂
Correct Answer:
r=√R₁xR₂
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The dimensions of latent heat are
- A 1 µA beam of protons with a cross-sectional area of 0.5 sq.mm is moving with a velocity
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- A geostationary satellite is orbiting the earth at a height of 5R above that surface
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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