Beginner level
Electricity Fundamentals
What are current, voltage and resistance? Learn to solve circuits with Ohm's and Kirchhoff's laws and to work safely.
- 1What is electricity? The flow of electrons10 minStart →
- 2Units and prefixes12 minStart →
- 3Ohm's Law: V = I × R15 minStart →
- 4Series and parallel connections18 minStart →
- 5The voltage divider14 minStart →
- 6Kirchhoff's laws20 minStart →
- 7Electrical power and heating12 minStart →
- 8Cells and batteries15 minStart →
- 9Short circuits, fuses and safety14 minStart →
- 10Introduction to alternating current (AC)16 minStart →