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How a transformer works

How a transformer works

A labelled transformer schematic showing a primary coil connected to an AC supply, a secondary coil connected to a load, a soft iron core, and changing magnetic flux through the core A transformer changes the amplitude of an alternating voltage using electromagnetic induction. It has a primary coil, a secondary coil, and a soft iron core that guides magnetic flux between them.

The operation of a transformer (A-level only) Lesson

  1. A Level
  2. /Physics
  3. /The operation of a transformer (A-level only)

Step-by-step lessons on AQA A Level Physics The operation of a transformer (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.

Lessons