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Four cells, each of emf E and internal resistance r, are connected in series across an external resistance R. By mistake one of the cells is connected in reverse. Then, the current in the external circuit is
Options
(a) 2E/4r+R
(b) 3E/4r+R
(c) 3E/3r+R
(d) 2E/3r+R
Correct Answer:
2E/4r+R
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
- A particle moves a distance x in time but according to equation x=(t+5)⁻¹
- For a wave propagating in a medium, identify the property that is independent
- A steady current is passing through a linear conductor of non-uniform cross-section.
- Sodium has body centred packing. Distance between two nearest atoms is 3.7 Å.
- An electric motor runs on DC source of emf 200 V and draws a current of 10 A.
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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