Physics · Current Electricity
A battery of EMF 'E' and internal resistance 'r' is connected to a variable external resistor 'R'. For which value of R is the power delivered to the external resistor maximum?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1R = E
- 2R = 2r
- 3R = r/2
- 4R = r✓
Correct answer
R = r
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