Question

give reason why electric bulb gives out light when connected to a circuit​

Answer 1

When the bulb is connect to a closed circuit with some current flowing through it;

• The current flows through the filament of the bulb made up of tungsten.

• Tungsten have a high melting point thus when the current passes through the filament;

• The electrical energy converts into heat energy making it red hot.

• Since it has a high melting point thus it does not melt and so the heat energy gets converted into light energy.

• This is why the bulb glows

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