In the circuit shown in Fig. E26.31 the batteries have
Chapter 26, Problem 31E(choose chapter or problem)
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 /(\mathcal{E}\) of the battery.
(b) What will the ammeter read when the switch is closed?
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