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Watt Lab

Heat water, light bulbs and blow fuses. Predict the power and the time.

Physics · Class 12 · Electric power and heating · 9 simulations. For JEE, NEET and your boards.

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What you'll learn

  1. Warm the water: Joule heating
  2. More current: Heat grows as the current squared
  3. Bulb on a lower voltage: A bulb's resistance stays the same
  4. Cut and join: Shorter coil, more heat
  5. Bright in a line: In a line, the bigger R glows brighter
  6. String of bulbs: Bulbs in a line share the voltage
  7. Two coils, one kettle: Coils side by side add their powers
  8. Main fuse: Add the powers, then find the current
  9. Line loss: Power lost in the line