Answer
2400
Work Step by Step
Given that $V_{p}=120V$, $V_{s}=3.0 V$ and
$N_{s}= 60$.
We know that $\frac{V_{s}}{V_{p}}=\frac{N_{s}}{N_{p}}$
$\implies N_{p}=\frac{V_{p}N_{s}}{V_{s}}=\frac{120V\times60}{3.0V}=2400$
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