Measuring an I-V characteristic
Measuring an I-V characteristic

An I-V characteristic shows how the current through a component changes as the potential difference across it changes. To collect one, you vary the voltage across the component and record matching values of III and VVV.
Step-by-step lessons on AQA A Level Physics Current-voltage characteristics. Each one builds up to exam-style questions. Physics is one of the most mathematically demanding A Levels -- at least 40% of the marks require maths skills at Level 2 (GCSE) standard or above, so build calculation and graph-handling fluency alongside the conceptual content from the start.