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Answer to Question #45817 in Electric Circuits for irebami

Question #45817
A battery charger supplies 10 A to charge a storage battery which has an open - circuit voltage of 5.6 V. If the voltmeter connected across the charger reads 6.8V, what is the internal resistance of the battery at this time?
1.3Ω
0.52Ω
0.12Ω
2.1Ω
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