A 70-Ω Resistor Is Connected Across the Terminals of a Battery

question 14

Multiple Choice

A 7.0-Ω resistor is connected across the terminals of a battery having an internal emf of 10 V.If there is a 0.50-A current through the circuit,what is the internal resistance of the battery?

• A)13 Ω
• B)20 Ω
• C)10.8 Ω
• D)27.0 Ω

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