Series and parallel circuits
Core concepts and learning points for this section:
Syllabus Points
Core
- 4.3.2.1 Know that the current at every point in a series circuit is the same
- 4.3.2.2 Know how to construct and use series and parallel circuits
- 4.3.2.3 Calculate the combined e.m.f. of several sources in series
- 4.3.2.4 Calculate the combined resistance of two or more resistors in series
- 4.3.2.5 State that, for a parallel circuit, the current from the source is larger than the current in each branch
- 4.3.2.6 State that the combined resistance of two resistors in parallel is less than that of either resistor by itself
- 4.3.2.7 State the advantages of connecting lamps in parallel in a lighting circuit
- 4.3.2.8 State the advantages of connecting lamps in parallel in a lighting circuit
- 4.3.2.9 Explain that the sum of the currents into a the source is larger than the current in each junction is the same as the sum of the currents branch out of the junction