When switch s is open the reading of voltmeter is 12 volt and when the switch has been closed the reading of voltmeter is it volte in that of ammeter is 2 ampere then determine the emf and internal resistance of the battery?
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A battery of emf ὲ and internal resistance r = 25 Ω is connected to this arrangement of resistors. The resistances of voltmeters V1 and V2 are so high that they do not affect the current in the circuit.
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When switch s is open the reading of voltmeter is 12 volt and when the switch has been closed the reading of voltmeter is it volte in that of ammeter is 2 ampere then determine the emf and internal resistance of the battery
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