If you have hot wires, then electrical energy is being used to heat the wires. Is this an efficient use of electricity? Explain.Question is related to the general area of circuits, resistance, current, voltage etc.Any help would be appreciated :)
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It depends on where the hot wire is. If it is in your wall, (part of the electrical wiring), it is overloaded and will likely start a fire. If it is in an appliance, such as a toaster, it is doing it's job. Someone else may shoot me down on this, but I believe that heating a grid of wires by running an electrical current through them is a fairly efficient way way to turn bread into toast. I say Fairly efficient because there is a lot of heat lost into the environment during and immediately after the toast is made and the electricity is shut off. Also, there is a period from when the power is turned on until the heating element reaches operating temperature. Also, I know of no other PRACTICAL way of making toast when the only energy comes through the electrical supply. So is it really efficient? No, but I know of no other practical way. Yes, you COULD heat up a clothes iron or similar appliance and use that to make toast, but that would be even more inefficient.
If depends what you are trying to achieve. If you are heating a room with an electric heater, it is very efficient. If you are trying to operate a light bulb or TV say, where the heat is unwanted, then it is inefficient
