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प्रश्न
उत्तर
Earthing is done to save an electrical circuit or an appliance from damage. If due to some reason such as short circuiting, an excessive current flows through the line wires, it will pass to the earth if there is local earthing, otherwise it may cause a fire due to overheating of line wires.
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संबंधित प्रश्न
To which wire of a cable in a power circuit should the metal case of geyser be connected.
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