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A battery of e.m.f. 3 volt and internal ...

A battery of e.m.f. 3 volt and internal resistance r is conneted inseries with a resistance of 55 ohm through an ammeter of resistance 1 ohm. The ammeter reads 50 mA. Draw the circuit diagram and calculate the value of r.

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MODERN PUBLICATION-FORCE ON A CURRENT-EXERCISE
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