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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
- The resistance of a bulb filament is 100 Ω at a temperature of 100⁰C.
- Two bulbs when connected in parallel to a source take 60W each, the power consumed,
- A polarised light of intensity I₀ is passed through another polariser whose pass axis
- If two vectors are equal in magnitude and their resultant is also equal in magnitude
- A step down transformer is used on a 1000 V line to deliver 20 A at 120 V
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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