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A battery with an emf of 3.00 V has an internal resistance r. When connected to...

A battery with an emf of 3.00 V has an internal resistance r. When connected to a resistor R, the terminal voltage is 2.90 V and the current is 0.16 A.


1. What is the value of the external resistor R?

2. What is the internal resistance r of the battery?

3. What is the energy dissipated in the battery's internal resistance in 1.6 minutes?

4. When a second identical battery is added in series and the external resistor is R = 10 Ohms what is the resulting current?

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