Physics for IGCSE & O level - Magnets And Currents (Section 2 - No. 18)
What are the two main ways of arranging the coils and the core in a practical transformer?
Two ways.
Only one way.
Both ways are designed to trap the magnetic field.
Both ways are designed not to trap the magnetic field
Explanation
Two ways are described, designed so all field lines from one coil pass through the other.
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