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May 30, 2015

Homework Help: Physics

Posted by Jacqui on Monday, October 11, 2010 at 5:00pm.

The battery in the circuit diagram has an EMF of 12V and an unknown internal resistance r. Voltmeter V1 is connected across the battery and voltmeter V2 is connected across the switch S. The resistance of the connecting wires and the ammeter is negligible. calculate the total external resistance of the circuit.

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