Physics A-Level
Transformer action and turns ratio
What Transformer action and turns ratio means in Physics A-Level, as defined for OCR.
Definition of Transformer action and turns ratio
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Reference: OCR
Alternating current in the primary coil produces a changing magnetic flux in the core, which links the secondary coil and induces an alternating e.m.f. there, with Ns/Np = Vs/Vp = Ip/Is for an ideal transformer.
Topics that use Transformer action and turns ratio
- Electromagnetism (OCR A-Level)
Related terms
- Faraday's law
- Lenz's law
- Magnetic flux
- Weber
- Angle between field and normal
- Energy losses and laminated cores
- Factors that change flux linkage
- Lenz's law and the negative sign
Using Transformer action and turns ratio in the exam
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