Consider the system shown. E is a standard 120 V input. If  the three loads are 45 W, 60 W and 75 W incandescent light bulbs,  respectively, determine the apparent power delivered to the system, the  source current, the reactive power and the real power.

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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.