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A resistor has a resistance R, and a battery has an internal resistance r. When the resistor is connected across the battery, 12 percent less

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A resistor has a resistance R, and a battery has an internal resistance r. When the resistor is connected across the battery, 12 percent less power is dissipated in the resistor than would be dissipated if the battery had no internal resistance. Find the ratio r/R. Number a Units v

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