An electric hot water heater is used to heat a 20-gallon tank of water from 60°F to 130°F in 100 minutes. a. Determine the wattage rating of the heater unit. b. Assuming that the heater unit is used on a 230-volt, 60 Hz service, find the current in amperes taken by the heater unit and the resistance of the unit.

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Electrical Heating Unit

The conversion of electrical energy to heat energy is known as electric heating. The heating system that converts the electrical energy to heat energy for various application is called electrical heating unit. Electricity is employed as the firing mechanism in electric heating systems, which transforms electric current to heat. Electric heaters have heating elements in the form of electric resistors.