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Statement of a problem № 2859

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An electric heater of resistance 8.0 Q draws 15 A from the service mains. At what rate is thermal energy developed, in W? What is the cost of operating the heater for a period of 4.0 h at 10c/kW·h?

Solution:
An electric heater of resistance 8.0 Q draws 15 A from the service mains. At wha

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