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About 30,000 Joules of energy is stored in a typical 1.5 volt D-cell battery. If two...

About 30,000 Joules of energy is stored in a typical 1.5 volt D-cell battery. If two such batteries are joined to produce a total of 3 volts in a circuit and cause 1.2 amps of current, how long will the batteries be able to deliver power to the circuit at this level? The resistance of an electric heater is 8 ohms when connected to 120 volts, how much energy does it use during 40 minutes of operation?

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genius_generous answered 1 year ago
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