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(b) A battery with unknown eml (E) and internal resistance (r) is connected to a circuit that involves a voltmeter, a switch, a ] $2

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(b) A battery with unknown eml (E) and internal resistance (r) is connected to a circuit that involves a voltmeter, a switch, a ] $2 resistor, and a 5 12 resistor, as shown below. When the switch is connected to a, the voltmeter reads 5,833 V. When the switch is connected to b. the voltmeter reads 6.731 V. Calculate the values of & and r. K V a 1.2

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