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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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Topics: Current Electricity
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In Young’s double slit experiment, the intensity of light coming from the first slit
- Monochromatic light of wavelength 667 nm is produced by a helium neon laser
- The 6563 Å line emitted by hydrogen atom in a star is found to be red shifted by 5Å
- The two ends of a rod of length L and a uniform cross-sectional area
- The density of ice is 0.9 g/cc and that of sea water is 1.1 g/cc
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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