Input and output voltages for a transformer (21-10)

Question 1 of 3

Question

Rms values of the input (p) and output (s) voltages

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Review

In other words, in a transformer the ratio of the number of windings in the secondary coil ( $N_{\mathrm{s}}$ ) to the number of windings in the primary coil ( $N_{\mathrm{p}}$ ) determines the output voltage relative to the input voltage. In a step-up transformer, $N_{\mathrm{s}}$ is greater than $N_{\mathrm{p}}$ , so the output voltage is greater than the input voltage. In a step-down transformer, $N_{\mathrm{s}}$ is less than $N_{\mathrm{p}}$ , which results in an output voltage less than the input voltage.