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Paths · Foundations

Electrical Foundations

Every calculation, diagnosis and exam question in the trade stands on this sequence. Take it in order; each lesson assumes only what came before it.

19 steps

DC fundamentals

  1. 1Atoms and Electric Charge
  2. 2Voltage
  3. 3Current
  4. 4Resistance
  5. 5How Ohm's Law Works
  6. 6Electrical Power
  7. 7Electrical Energy and kWh
  8. 8Series Circuits
  9. 9Parallel Circuits
  10. 10Series-Parallel Circuits
  11. 11Meters and Measurement

AC, where the trade lives

  1. 12Alternating Current
  2. 13Sine Waves and Frequency
  3. 14Capacitance
  4. 15Inductance
  5. 16Impedance
  6. 17Power Factor
  7. 18Three-Phase Power
  8. 19Single-Phase vs Three-Phase Systems