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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
- The nuclear radius of a certain nucleus is 7.2 fm and it has a charge of 1.28×10⁻¹⁷ C.
- If Q, E and W denote respectively the heat added, change in internal energy
- An electron of mass Mₑ, initially at rest, moves through a certain distance in a uniform
- A 6 volt battery is connected to the terminals of a three metre long wire of uniform
- In Young’s double slit experiment, the locus of the point P lying in a plane
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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