Problem a battery with an emf of 120 v shows a terminal, Ask an Expert

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Problem: A battery with an emf of 12.0 V shows a terminal voltage of 11.0V when operating in a circuit with two light bulbs rated at 3.0 W (at 12.0 V) which are connected in parallel.

Part A: What is the battery internal resistance?

Please show all work and steps to determine the battery's internal resistance.

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