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Edexcel IGCSE Physics 6 17p Transformers Questions

Trace the changing field from the primary coil through the iron core to the secondary, then compare the two turn counts to classify voltage step-up or step-down.

Syllabus
First assessment 2019
Course
Physics 4PH1

Exam points

  • Identify a transformer’s primary and secondary coils and the soft-iron core linking them.
  • Explain how alternating current in the primary coil creates a changing magnetic field in the core that induces voltage in the secondary coil.
  • Use primary/secondary turn counts and input/output voltage labels to identify a step-up or step-down transformer.

Edexcel IGCSE Physics 6 17p Transformers Questions question 1

[Maximum number: 1]

Transformers are useful in the transmission of electricity.

The diagram shows a step-down transformer.

Figure for Question Edexcel IGCSE Physics 6 17p Transformers Questions question 1 — Edexcel IGCSE Physics

Give the name of a suitable metal that could be used in the core of the transformer.

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