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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 short magnet of magnetic moment M, is placed on a straight line. The ratio
- A boy standing at top of a tower of 20 m height drops a stone
- When a Daniel cell is connected in the secondary circuit of a potentiometer,
- Ohm’s law is not applicable except to
- Ratio of longest wavelengths corresponding to Lyman and Balmer series in hydrogen
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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