Which winding of the transformer has less cross-sectional area ?

Question

Quizplus · Accepted Answer

The high voltage winding of a transformer has less cross-sectional area because it carries a lower current. According to the transformer equation $V_p/I_p = V_s/I_s$, where $V$ is voltage and $I$ is current (subscripts $p$ and $s$ stand for primary and secondary, respectively), a higher voltage implies a lower current for the same power level, thus requiring less copper or aluminum material for the winding, which results in a smaller cross-sectional area.

Which Winding of the Transformer Has Less Cross-Sectional Area