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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
- Two spheres of mass m and M are situated in air and the gravitational force
- A light of wavelength 5000Å falls on a sensitive plate with photoelectric work
- An alpha nucleus of energy 1/2 mv² bombards a heavy nuclear target of charge Ze
- The photoelectric threshold wevelength for potassium (work function being 2 eV) is
- A train of mass 2x 10⁵ kg has a constant speed of 20 m/s up a hill inclined
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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