1. Resistors in Series
Resistors in series: so easy even a 7 year old can explain it (well mostly).
2. Resistors in Parallel
Resistors in parallel cause the overall resistance to decrease. I also show how you can rearrange the equation when you have just two resistors in parallel to make it even quicker to work out their combined resistance.
3. How to construct real circuits
Finding it hard to make your circuits work? Use these simple tips to make sure they work every time.
4. How to solve circuit problems
Just a brief look at some of the most important equations you should use, and why you should label circuit diagrams in different colours as you work through solutions.