An arrangement to measure the emf E and internal resistance r of a battery

Figure (32-E2) shows an arrangement to measure the emf E and internal resistance r of a battery. The voltmeter has a very high resistance and the ammeter also has some resistance. The voltmeter reads 1.52 V when the switch S is open. When the switch is closed the voltmeter reading drops to 1:45 V and the ammeter reads 1 0 A. Find the emf and the internal resistance of the battery.

HC Verma measurement and error playlist:

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