You will compare the brightness of each lightbulb in circuits II and III to the one in circuit I.  Rank the lightbulbs A, B, C and D according to their brigthness from the brightest to the dimmest. JUSTIFY your answers. Rank the lightbulbs A, E, F and G according to their brightness from the brightest to the dimmest. JUSTIFY your answers.

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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.