Transformers

Concept: Physics (Electromagnetism) - Mutual Induction in Transformers.

Step 1: Understand transformer operation. A transformer consists of two coils linked by a common magnetic flux. When an alternating current flows through the primary coil, it creates a magnetic field that changes over time.

Step 2: Identify the cause of induction in the secondary. According to Faraday's Law of Induction, a varying magnetic field through a conductor induces an electromotive force (e.m.f.).

Step 3: Conclusion. The secondary coil experiences an e.m.f. because the changing magnetic field produced by the primary coil passes through it. $ $