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3 BR BR 5 A battery of emf 40V and internal resistance 202 connected to...

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3 BR BR 5 A battery of emf 40V and internal resistance 202 connected to a bulb of resistor 1892 What is efficiency of the battery 1 10 3 7 5 E 40 V r 202 11 R 180 2 45 4 90

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