A battery has an emf and an internal resistance when the, Ask an Expert

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A battery has an emf and an internal resistance . When the battery is connected to a 25 ohm resistor, the current through the battery is 0.65 A . When the battery is connected to 60 ohm resistor, the current is 0.50 A.

a) Find the battery's emf

b) Find the battery's internal resistance

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