(39) What is the function of an earthing wire ? Why is it
necessary to earth metallic appliances ? (Chp.13)
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the function of earthing wire is to protect the house or building for being damage due to lighting when the lighting occurs the the copper road attract the light and live in earthing so we have to place a earthing in house
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Answer : a) The main function of earth wire is to absorb excess electricity passing through the appliance and to prevent overloading of live wire. The metallic appliances are earthed because whenever there is leakage of current, the leaked current passes through the earth wire to earth.
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