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Conduction

in a simple c...

Question

in a simple circuit of a cell switch and a bulb connected with wires on passing current for some time the bulb becomes hot but the wires do not .why ?

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Solution

Dear Student
The amount of heat produced in a wire depends on its material, length and thickness.
The copper wires used for making electric circuits in science activities normally do not become hot on passing electric current because they have very low resistance (due to which the heat produced in them is negligible).

The filament of an electric bulb is of tungsten gets heated to such a high temperature that it starts glowing. So it becomes hot.

Regards

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