Figure (32-E2) shows an arrangement to measure the emf E and internal resistance r of a battery. The

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.
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