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light and heat energy occur in a light bulb when it is turned on.
In a light bulb, electrical energy is transformed into light energy and heat energy.
a light bulb
A light bulb
Heat and light
Light energy (EM visible radiation) plus thermal energy (through heating the bulb filament)
It is called the 'filament'.
filament
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They are open and closed circuit
Chemical Electrical Light
In an incandescent light bulb, electrical energy is transformed into thermal energy and then into light energy. When electricity flows through the filament of the bulb, it heats up and becomes white-hot, producing thermal energy. This thermal energy then causes the filament to glow and emit light energy.