An Ideal Battery Has an Emf of 12 V

question 23

Multiple Choice

An ideal battery has an emf of 12 V.If it is connected to a circuit and creates a current of 4.0 A, what is the power?

• A)0.3 W
• B)3.0 W
• C)36 W
• D)48 W
• E)cannot tell without knowing the resistance of the circuit

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