Circuits
Learn the complete H1 Physics 8867 Circuits scope through clear explanations, worked methods and purposeful practice.
Learning goals
- Recall circuit symbols and draw or interpret circuit diagrams.
- Draw circuit diagrams containing sources, switches, resistors, meters, lamps, thermistors, light-dependent resistors and diodes.
- Apply resistance and resistivity, interpret I–V characteristics and explain temperature effects.
- Analyse e.m.f., terminal potential difference and internal resistance in real sources.
- Analyse series, parallel and potential-divider resistor networks.
Before you begin
Start with the first lesson if this topic is new. If you are revising, use Check your understanding to find the lesson that deserves your attention, then work from the explanation to supported and independent practice.
Be comfortable with: Currents
How the ideas connect
- Circuit symbols and diagrams
- Resistance, resistivity and component behaviour
- Series, parallel and potential-divider networks
Learn in order
Lesson route
Learn the topic
- 01Circuit symbols and diagramsA circuit diagram is a model of electrical connections, not a picture of the apparatus. Standard symbols and correct meter placement make the model unambiguous.35 min
- 02Resistance, resistivity and component behaviourResistance is the p.d.-to-current ratio at an operating point. Material, geometry, temperature and carrier behaviour determine how that ratio changes.35 min
- 03Series, parallel and potential-divider networksCircuit networks are solved by combining two conservation ideas: charge flow at junctions and energy transfer around loops.35 min
Check your understanding
Practice and check
What you will learn
These lessons cover the complete H1 Circuits scope in a deliberate order.
- Recall the standard symbols for every component named in the H1 syllabus.
- Draw and interpret series, parallel and measuring circuits.
- Define resistance and use V = IR and R = ρl/A.
- Sketch and interpret I–V curves for an ohmic resistor, filament lamp, diode and NTC thermistor.
- Find combined resistance for series and parallel groups.
- Solve mixed networks from one source.
Syllabus and review details
Covers the complete 2027 H1 Physics 8867 requirements for Circuits; H2-only extensions are deliberately left out.
Use written working, labelled diagrams and clear physical reasoning as well as final answers. The lesson questions are designed to prepare you for both calculations and explanations.
Curriculum and content checked 2026-09-14
Frequently asked questions
Where should I start in Circuits?
Start with Circuit symbols and diagrams. The 3 lessons build in order, and each one ends with an independent question and a clear next step.
How should I use the worked examples?
Cover the steps, attempt the question first, then compare your method line by line. Check the sign, direction, unit and size of your result.
What should I do when I finish the lessons?
Use Check your understanding, revisit any weak lesson, then complete the practice plan without looking at the worked answers.
Course and syllabus information
- Course
- GCE A-Level H1 Physics
- Edition
- GCE A-Level H1 Physics 2027