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MYTHMyth or Fact · #13EP.161 · 24 s

Myth or Fact #13: "Switching a light on uses more power than leaving it on" — MYTH

Cover of the lesson: Myth or Fact #13: "Switching a light on uses more power than leaving it on" — MYTHComing to YouTube soon
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MYTHTHE VERDICT
// WHAT YOU WILL LEARN

MYTH: an LED bulb's switch-on surge lasts a few thousandths of a second and uses less energy than one second of light (under 1 J vs 9 J for a 9 W bulb); switch LEDs off whenever you leave.

// LESSON NOTES

"Turning a light ON uses more power than just leaving it on." Myth or fact? 💡

When you flip the switch, an LED bulb takes a tiny surge ⚡ — but it lasts only a few thousandths of a second (a blink is about 0.3 s!).
That surge uses less energy than ONE second of light: under 1 J vs about 9 J for a 9 W LED bulb.

Verdict: MYTH ❌
With LEDs, switch them off every time you leave the room. ✅

Read the voiceover (transcript)
  1. Does switching a light on waste more power?
  2. When you flip the switch, there is a tiny surge!
  3. But it lasts less than a blink, a few thousandths of a second.
  4. That surge uses less energy than one second of light!
  5. So is it a myth or a fact?
  6. Myth!
  7. LEDs? Switch them off when you leave!
  8. Next: does a bigger power bank charge faster? Follow for more!

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