Question

Why we use thin wires rather than thick wires in earthing?

Answer 1

Answer:

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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Answer 2

Answer:

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.