Parallel circuits
Branches: the same p.d. across each, currents that add at a junction, and a total resistance smaller than any branch.
You will be able to
- State the rules for current, p.d. and resistance in parallel
- Calculate branch currents and the total current
- Explain why adding a branch lowers the total resistance
20 minutes, 6 exam-style questions, with the Ohm's Law and Circuits Calculator and the Series and parallel circuits simulation.