How do LED bulbs save energy?

Answer: Convert electricity to light efficiently

Convert electricity to light efficiently ✓ — Correct! LEDs convert about 95% of electricity into light, wasting only 5% as heat. Incandescent bulbs do the opposite—95% becomes heat. LEDs use semiconductors that emit photons directly, rather than heating a filament.

Use lower voltage than other bulbs — Wrong. LEDs save energy through efficiency (light per watt), not voltage. They convert electricity to light with minimal heat waste.

Contain special energy-saving gas — Wrong. LEDs are solid-state semiconductor devices, not gas-filled tubes. They save energy by directly converting electricity to light through electron movement in semiconductors.