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Current Electricity question

2019 · 8 Apr · Shift 2 · Q46
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Current Electricity question

2019 · 8 Apr · Shift 2 · Q46

JEE MainPhysicsCurrent ElectricityMCQ+4 / −1
A cell of internal resistance r drives current through an external resistance R. The power delivered by the cell to the external resistance will be maximum when :-
  1. A
    R = 1000 r
  2. B
    R = r
  3. C
    R = 2r
  4. D
    R = 0.001 r
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