Pearson Edexcel IGCSE Physics · Year 10–11
Specification points 2.1–2.21. Safety, power, series and parallel rules, and the I–V practical. Physics-only points 2.22–2.28 are not taught here.
From your teacher
If you learn five equations and the series/parallel rules, most of the paper becomes “which rule applies here?” I will keep stopping you from saying “current is used up” and from leaving a current in mA. Convert first, write the equation second, then substitute.
Lesson A · 2.1–2.6
Units, insulation, earth, fuses, heating, $P=IV$, $E=IVt$, a.c. vs d.c.
Lesson B · 2.7–2.8, 2.10, 2.13–2.21
Charge, voltage, Ohm’s law, series and parallel, domestic lighting.
Lesson C · 2.9, 2.11–2.12
I–V practical, lamp, diode, LDR, thermistor, LED as a current indicator.
Fuse choice, series resistors, energy and charge — marked the way I mark.
| Point | You must be able to | Lesson |
|---|---|---|
| 2.1 | Use A, C, J, Ω, s, V, W | A |
| 2.2–2.3 | Safety features; heating in a resistor | A |
| 2.4–2.6 | $P=IV$ and fuses; $E=IVt$; a.c. vs d.c. | A |
| 2.7–2.8, 2.10 | Series vs parallel applications; current in series; changing $R$ | B |
| 2.13–2.21 | $V=IR$; $Q=It$; electrons; junction; parallel voltage; series calculations; $E=QV$ | B |
| 2.9, 2.11–2.12 | I–V investigation; LDR and thermistor; lamp / LED indicator | C |