Why we use thin wires rather than thick wires in earthing?
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Thick wires have less resistance and so they will heat up less when a large current is passed through them. The resistance of a wire is proportional to its length and inversely proportional to its cross-sectional area.
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Why are thick wires rather than thin wires usually used to carry large currents? Ans. Thick wires have less resistance and so they will heat up less when a large current is passed through them. The resistance of a wire is proportional to its length and inversely proportional to its cross-sectional area.
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