What is the thermal effect of electric current ? Write down the names of any four appliances based on this effects.
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Thermal effect of electric current - The transformation of electric energy to heat energy is called thermal effect of electric current. The substances of a conductor is made up of atoms. In a metallic conductor, there are a large number of free electron moving with different velocity.
light bulb , electric iron, heater are based on heating by electric current. For example, bulb starts glowing after it is heated, the tungsten wire of electric bulb on passing electric current heats up so much and starts to glow and emit light.
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