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Shown an arrangement to measure the emf ...

Shown an arrangement to measure the emf `(epsilon)`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 read 1.0A Find the emf and the internal resistance of the battery.

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The correct Answer is:
(a) `1.52 V (b) 0.07 Omega`
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