BRAINCAKETransformers
A transformer consists of two coils wound around the same soft iron core. When the primary coil is connected to an alternating p.d. and alternating magnetic field is generated in the soft iron core. The flux linkage in the secondary coil alternates with the magnetic field and the change in flux linkage generates an e.m.f. in the secondary coil. All the magnetic flux produced by the primary coil passes through the secondary coil.
Sign in free to see the rest of this lesson, the R.E.C.I.P.E. recall steps and the quiz
BrainCake is free. Make an account in seconds and pick up where this page stops.
Key terms in this lesson
- Magnetic flux
- The product of the magnetic flux density and the area through which the field passes at right angles to it, measured in weber.
More in Electromagnetic Induction
- Solenoid
- Lenz's Law
- Faraday's Law of Electromagnetic Induction
- The Alternating Current Generator
- Power Station Alternators
- Back e.m.f.
- Transformer Efficiency
- The National Grid
All 12 lessons in Electromagnetic Induction · All AQA A-level Physics topics