Given a battery emf 126 volt internal resistance 0003 ohm, Ask an Expert

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Given a battery, emf 12.6 volt, internal resistance 0.003 ohm. If a 0.04 resistance is connected across the battery, What is the current flowing? And What is the voltage across the external resistor? How big would the internal resistance need to be so that only one volt were across the external resistance?

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