What is the symbol of a transformer?

The symbol of a transformer in electrical diagrams is typically represented as two coils (or windings) placed next to each other, often with a dotted line connecting them to indicate magnetic coupling. The primary winding is usually shown with one or more dots to signify the phase, while the secondary winding is shown without dots or with a different representation. The turns ratio is often indicated by labeling the windings with numbers or letters.