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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
- Three blocks A,B and C of masses 4 kg, 2 kg and 1 kg respectively are in contact
- The rms current in an AC circuit is 2 A. If the wattless current be √3 A,
- If two soap bubbles of different radii are connected by a tube
- In a compound microscope, the focal length of the objective is 2.5 cm and of eye lens
- The process of adding impurities to the pure semiconductor is called
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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