A sinusoidal voltage, having a root-mean-square value of 400 V, has a peak-to-peak value of
A) 0 V
B) 400 V
C) 566 V
D) 1132 V

Question

Quizplus · Accepted Answer

The peak value ($V_{peak}$) of a sinusoidal voltage is related to its root-mean-square (RMS) value ($V_{RMS}$) by the equation $V_{peak} = V_{RMS} \times \sqrt{2}$. Therefore, for an RMS value of 400 V, the peak value is $400 \times \sqrt{2} = 566$ V. The peak-to-peak value ($V_{pp}$) is twice the peak value, so $V_{pp} = 2 \times 566 = 1132$ V.

A Sinusoidal Voltage, Having a Root-Mean-Square Value of 400 V