When switch S in Fig. E 25.33 is open, the voltmeter V of the battery reads 3.08 V. When the switch is closed, the voltmeter reading drops to 2.97 V and the ammeter A reads 1.65 A. Find the emf, the internal resistance of the battery, and the circuit resistance R . Assume that the two meters are ideal, so they don't affect the circuit. | Numerade
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SOLVED: In the circuit shown in Fig. E26.31 the batteries have negligible internal resistance and the meters are both idealized. With the switch S open, the voltmeter reads 15.0 V. (a) Find the emf ε of the battery. (b) What will the ammeter read when the switch is closed?
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