How circuits transfer energy
How circuits transfer energy

An electrical circuit is a complete path that lets charge flow. A cell or mains supply is the source of electrical energy, and components such as lamps or motors transfer that energy into other forms.
Step-by-step lessons on CIE IGCSE Physics 4.2.5 Electrical energy and electrical power. Each one builds up to exam-style questions. Build a strong foundation in mechanics and electricity before tackling the more mathematically demanding astrophysics and nuclear topics.