Transformers
Lesson 7 / 8
Lesson video
The video is not available yet.
Lesson slides
not available yet
Lesson details
Lesson outcome
I can describe how a transformer works and solve problems using transformer equations.
Show transcript
A potential difference that causes a current to flow in the primary coil magnetises the iron core.
When the iron core is magnetised, it induces a potential difference across the secondary coil.
An AC gives the changing magnetic field needed to induce a potential difference across the secondary coil.
Transformers are almost 100% efficient so the power output is equal to the power input.
The ratio of the number of turns on the coils is equal to the ratio of the potential differences across them.
Worksheet
not available yet
Quizzes
This quiz is not available yet.
What pupils see
The same lesson as a pupil sees it. You can set any section as work on its own.
- IntroductionPrepare · Not available
- Starter quizActivate · Not available
- Lesson videoLearn · Not available
- Exit quizCheck · Not available
This content is by Cashar and published under an open licence.