Charge and electric field strength
Charge and electric field strength
Electric charge comes in two types, positive and negative, and is measured in coulombs, C\text{C}C. Like charges repel and unlike charges attract, so electric forces can act without contact.
Step-by-step lessons covering Edexcel A Level Physics Electric fields and Coulomb's law for A Level Physics. Each lesson works through exam-style questions in Paper 1, Paper 2 and Paper 3 format. Physics is one of the most mathematically demanding A Levels -- at least 40% of the marks across the three papers require maths skills at Level 2 (GCSE) standard or above, so build calculation and graph-handling fluency alongside the conceptual content from the start.