8. a 100-volt carbon filament lamp takes 1-amp when glowing with a filament temperature of 1615 degrees celcius. Calculate the momentary current when the lamp is first switched on in air temperature 15 degrees celcius. The temperature coefficient of resistance for carbon maybe taken as -0.000265 per degrees celcius at 15 degrees celcius.

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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.