A battery has an emf e and an internal resistance r when, Physics

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A battery has an emf e and an internal resistance r when

A battery has an emf E and an internal resistance r. When the battery is connected to a 20 Ω resistor, the current through the battery is 0.65 Amp. When the battery is connected to 55 Ω resistor, the current is 0.50 Amp.

a) Determine the battery emf.

b) Determine the battery internal resistance.

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Physics: A battery has an emf e and an internal resistance r when

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Physics: A battery has an emf e and an internal resistance r when

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