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Mains electricity

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Why this, why now

This unit covers UK domestic a.c. supply, mains wiring safety, energy changes in electrical systems, power ratings, and energy transfer. It explains the National Grid, transformers, energy sources, and calculations for energy changes and power transmission efficiency.

Prior knowledge requirements

  • Ardaydu waa inay yaqaanaan aasaaska maadada.
  • Ardaydu waa inay awoodaan inay raacaan tilmaamo fudud.
Unit 5 / 6

Mains electricity

This unit covers UK domestic a.c. supply, mains wiring safety, energy changes in electrical systems, power ratings, and energy transfer. It explains the National Grid, transformers, energy sources, and calculations for energy changes and power transmission efficiency.

8 lessons
  1. Danger from electric shock
  2. Calculating with electric charge
  3. Calculating with electric charge: including complex calculations
  4. Power of an appliance or electric circuit
  5. Short circuits and earth wires
  6. Energy resources
  7. Transformers
  8. The National Grid