Question

Take a thick copper wire.Clamp it horizontally on a stand.To the free end of the wire,fix a pin with the help of wax.Heat the wire with the spirit lamp at a place closer to the clamped end. The wax melts and pin falls.Which property of metals is shown here?

Answer 1

Answer:

This happens because heat is being conducted through the metallic wire.

Electrical conductivity: Metals are good conductors of electricity. Due to this, electric wires are made of metals. For making electrical wires, aluminium and copper are the preferred materials because they are cost effective. However, in some electrical gadgets; wires of silver or gold are used because of their superior conductivity. The following activity shows electrical conductivity of metals.

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