Question: The current drawn from a battery is 1.80 A when a 7.0- resistor is connected across the battery terminals. If a second 12- resistor is

The current drawn from a battery is 1.80 A when a 7.0-Ω resistor is connected across the battery terminals. If a second 12-Ω resistor is connected in parallel with the 7-Ω resistor, the battery delivers a current of 2.20 A. What are the emf and internal resistance of the battery?

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