Discussion
The voltage ratio of a transformer equals
Answer: C
Correct answer: the turns ratio of its windings
Both windings link the same core flux, so each develops \( 4.44fN\Phi_m \) and the ratio of the two voltages is simply the ratio of the turns. That is exactly why the flux term cancels and the relation holds regardless of frequency, core material or size - it is the defining property of the transformer.
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