Multiple choice

A transformer works on which of the following principles?

  1. Electro magnetic parade

  2. Electro magnetic induction

  3. Electro magnetic polarization

  4. Electro magnetic conduction

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Transformers operate based on the principle of mutual induction, where a changing magnetic flux in the primary coil induces an electromotive force in the secondary coil. This is a fundamental application of Faraday's law of electromagnetic induction.