USING TRANSFORMERS TO CHANGE VOLTAGES
1 mark · NormalWhich part of a transformer links the magnetic field between the two coils?
- A.Plastic casing
- B.Copper wires
- C.Soft iron core
- D.Steel rod
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Correct option: Soft iron core
Common mistakes: Selecting copper wires (they conduct electricity, not link the field)
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Marking points
A1 · 1 mark · Selects 'Soft iron core' as the correct answer.
Worked solution
The correct answer is 'Soft iron core', which links the magnetic field between the primary and secondary coils.