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Fundamentals of Electric Circuits for K122.3 · Interactive lesson: Inside the charging cableStep 1/10
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Interactive lesson: Inside the charging cable

You control this lesson yourself: a 3D model with a battery, a charging cable and a bulb, followed by three interactive activities that follow the lesson:

  1. Ohm's law inside the wire — why cheap cables often get hot.
  2. Power in the wire, in the lamp, and the electricity bill.
  3. LEDs, protective resistors and how to choose a resistor.

About 15 minutes.