alleryIn a transformer the primary and secondary coils are usually wound around
AA solid copper rod inside the body
BA laminated soft iron core
CAn aluminium block in the centre
DA plastic frame with no metal at all
Answer & Solution
Correct answer: B. A laminated soft iron core
1. The chapter section on transformer construction describes the core.
2. A soft iron core links the magnetic flux between the coils.
3. Lamination reduces energy loss to eddy currents.
4. So option A is correct.
_Source: Selina Concise Physics Class 10, Ch 10 Electromagnetism (Mistral OCR'd PDF), section on transformer construction_
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