alleryA transformer works on the principle of:
ASelf-induction only
BMutual induction
CHall effect
DBrewster's law
Answer & Solution
Correct answer: B. Mutual induction
1. A changing primary current creates a changing flux through a shared iron core.
2. The shared flux induces an EMF in the secondary coil — MUTUAL induction.
3. Voltage ratio = turns ratio: V_s / V_p = N_s / N_p.
_Source: syllabus Physics Ch 6 §6.11 Transformer_
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