Which form of energy powers a light bulb?

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Multiple Choice

Which form of energy powers a light bulb?

Explanation:
Electrical energy powers a light bulb. In a circuit, the power source pushes electrons through the filament, and the filament’s resistance converts that electrical energy into light energy that we see and some thermal energy that we feel as heat. The other forms—solar energy would need to be converted to electrical energy first, kinetic energy is about motion and isn’t what drives the lamp, and thermal energy is a byproduct of the conversion, not the input energy—so the direct driving energy in a standard bulb is electrical energy.

Electrical energy powers a light bulb. In a circuit, the power source pushes electrons through the filament, and the filament’s resistance converts that electrical energy into light energy that we see and some thermal energy that we feel as heat. The other forms—solar energy would need to be converted to electrical energy first, kinetic energy is about motion and isn’t what drives the lamp, and thermal energy is a byproduct of the conversion, not the input energy—so the direct driving energy in a standard bulb is electrical energy.

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