Why a charged capacitor has stored energy
Why a charged capacitor has stored energy
When a capacitor charges, electrons are pushed onto one plate and removed from the other. As charge builds up, adding more electrons becomes harder because the negative plate repels them.
Step-by-step lessons on AQA A Level Physics Energy stored by a capacitor (A-level only). 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.