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A Battery Applies 45 Volts to a Circuit, While an Ammeter

Question 22

Multiple Choice

A battery applies 45 volts to a circuit, while an ammeter reads 10 mA. Later, the ammeter reading drops to 7 mA. Assuming the resistance has not changed, the voltage must have:


A) increased to 58.5 volts
B) decreased to 31.5 volts
C) decreased 30% from its old value
D) both B and C are correct
E) stayed the same

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