In the circuit from below, switch A is closed, switch B is open and the lamp C is off. Is there any problem? A switch B switch Voltage source (+1) C lamp There is no problem, the lamp C should be off because it is short-circuited by switch A being closed. There is a problem, the lamp C should be on as long as the switch A is closed; either the lamp is burned, or the voltage source is disconnected. There is a problem, the lamp C should be on as long as the switch B is open; most likely the lamp is burned. There is no problem, since the lamp C should be off as long as switch B is open.

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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.