Electric Potential: Energy, Signs and Field Graphs | A-level Physics

What does electric potential tell us about the energy a charge gains or loses? Build a clear A-level understanding of volts, charge signs and electric-field graphs. Follow one point-charge model to calculate potential, potential-energy changes and work done by the electric field. Compare positive and negative charges, read equipotential maps, and connect potential gradients with electric field strength. Use signed areas under field graphs, then explore an isolated conducting sphere and its capacitance. The core electric-potential content supports AQA, OCR A, Pearson Edexcel and Cambridge International A-level Physics. The isolated-sphere capacitance derivation is an OCR A extension; check your specification for required depth. Chapters 00:00 What is electric potential? 00:35 Reference and point-charge potential 02:00 Potential energy and work 04:08 Equipotentials 04:55 Potential gradients and field graphs 06:26 Conducting spheres and capacitance 07:24 Check your understanding Lesson notes: https://inklearning.co.uk/physics/ele... Practise electric potential questions: https://inklearning.co.uk/physics/pra... Before this lesson — Coulomb's law and electric field strength: https://inklearning.co.uk/physics/ele... Next lesson — comparing electric and gravitational fields: https://inklearning.co.uk/physics/ele... Explore the electric fields unit: https://inklearning.co.uk/physics/ele... Try the prediction before revealing the answer, then use the practice questions to check your understanding. Subscribe to InkPhysics for more A-level physics lessons. #ALevelPhysics #ElectricPotential #InkPhysics