If you use an extension cord, current travels from the 120 V outlet, along one wire inside the cord, through the appliance you’ve plugged into the cord, and back to the outlet through a second wire in the cord. The total resistance of the two wires in a light-duty extension cord is 0.40 Ω; the current through such a cord should be limited to 13 A. If a 13 A shop vacuum is powered using this cord,a. What is the voltage drop across the vacuum?b. How much power does the vacuum use?c. How much power is dissipated in the cord?

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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.