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Science project idea on heat is produced by electricity.
Heat Produced by Electricity Science Project Idea
How heat is produced by electricity. Name various household appliances in which heat is produced by an electric current. The way in which this is done is illustrated as follows.
Heat Produced by Electricity Experiment Make a circuit of several electric cells and a copper wire of the thickness generally used in making connections. Now replace a small portion of the copper wire with fine iron or German silver wire wound around the bulb of a thermometer. What is the result? The resistance of small wires to the current of electricity is much greater than the resistance of large wires, and the electrical energy is changed into heat energy. This is similar to the way that mechanical energy when resisted by friction is changed into heat energy. All the electric appliances you have named, such as flatirons, toasters, curling- iron heaters, electric chafing dishes, electric stoves, foot warmers, car heaters, bacteriological incubators and sterilizers, are heated in this way. Industrially, the changing of electrical energy into heat energy has made possible many important processes. An intense heat (about 3000 C.) is developed in the electric furnace, due to resistance offered to the passage of the current. Some of the uses to which the electric furnace has been put, because of the intense heat generated, are the production of carborundum, the most important abrasive used; artificial graphite, used in the manufacture of electrodes and lubricants; and smelting, the refining of metals.
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