Question
where do light bulbs get their energy from?
Answers
GPT-4o mini
Light bulbs get their energy from the electrical power supplied to them. When you connect a light bulb to a power source (like a wall outlet), electric current flows through the filament in incandescent bulbs or through a gas in fluorescent and LED bulbs.
1. **Incandescent Bulbs**: These contain a thin filament that glows when an electric current passes through it, producing light. The filament is typically made of tungsten and heats up due to the resistance it provides to the current.
2. **Fluorescent Bulbs**: These use a gas that emits ultraviolet light when electricity is applied to it. The UV light then causes a phosphor coating on the inside of the bulb to glow, producing visible light.
3. **LED Bulbs**: Light Emitting Diodes (LEDs) produce light when electric current passes through a semiconductor material, causing it to emit photons.
In all cases, the source of energy comes from the electrical grid or batteries, converting electrical energy into light energy.
1. **Incandescent Bulbs**: These contain a thin filament that glows when an electric current passes through it, producing light. The filament is typically made of tungsten and heats up due to the resistance it provides to the current.
2. **Fluorescent Bulbs**: These use a gas that emits ultraviolet light when electricity is applied to it. The UV light then causes a phosphor coating on the inside of the bulb to glow, producing visible light.
3. **LED Bulbs**: Light Emitting Diodes (LEDs) produce light when electric current passes through a semiconductor material, causing it to emit photons.
In all cases, the source of energy comes from the electrical grid or batteries, converting electrical energy into light energy.