Essential idea: One of the earliest uses for electricity was to produce light and heat. This technology continues to have a major impact on the lives of people around the world.
Understandings: Circuit diagrams; Kirchhoff's circuit laws; Resistance expressed as R = V/I
Applications and skills: Drawing and interpreting circuit diagrams; Solving problems involving potential difference, current, charge, Kirchhoff’s circuit laws, power, resistance and resistivity; Investigating combinations of resistors in parallel and series circuits
Data booklet equations: Rtotal = R1 + R2 + …; 1/Rtotal = 1/R1 + 1/R2 + …
A good basic circuit simulator: https://go-lab.gw.utwente.nl/production/electricalCircuitLab/build/circuitLab.html?preview