A battery delivers 254a to a resistor rated at 460 when it, Ask an Expert

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A battery delivers 2.54A to a resistor rated at 4.60? . When it is connected to a 2.15? resistor, it delivers 4.98A .

(a) Determine the battery's internal resistance (assumed constant). r=??

(b) Determine the battery's emf in V.

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