Current, Voltage and Resistance | Year 9 Physics PowerPoint Lesson

Build secure understanding of electricity with this colourful, visual, ready-to-teach Year 9 Physics lesson. Pupils learn current, potential difference and resistance with their correct units, how to connect ammeters and voltmeters, and how to use V = I x R in all three arrangements. Three worked examples model the full method, including unit conversions from milliamps. The rope model gives pupils a concrete way to think about what’s happening in a circuit, and clear comparison slides set out the rules for series and parallel circuits. A misconceptions slide takes on the stubborn idea that current gets used up, so pupils learn to separate charge from energy. Two interactive, hands-on activities are included: a circuit-building practical with ammeters and voltmeters, and a V = I x R problem set with a stretch on combined resistance. Teacher prompts on every slide make it non-specialist friendly and usable as a cover lesson (the practical needs circuit kits), and the content builds directly towards GCSE Physics.

Keywords: KS3, Year 9, Physics, science, electricity, current, voltage, potential difference, resistance, Ohm’s law, V = IR, series and parallel circuits, PowerPoint lesson, cover lesson, GCSE Physics