alleryA step-up transformer has
ANo coils at all in either side of it
BMore turns in the primary coil than in the secondary coil
CEqual turns in primary and secondary coils
DMore turns in the secondary coil than in the primary coil
Answer & Solution
Correct answer: D. More turns in the secondary coil than in the primary coil
1. The transformer voltage ratio equals the turn ratio.
2. A step-up transformer raises the secondary voltage.
3. So the secondary must have more turns than the primary.
4. Hence option A is correct.
_Source: Selina Concise Physics Class 10, Ch 10 Electromagnetism (Mistral OCR'd PDF), section on transformers_
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