If a sinusoidal voltage has a peak value of 424.2 V, what is its peak-to-peak value?

If a sinusoidal voltage has a peak value of 424.2 V, what is its peak-to-peak value?

• A. 848.4
• B. 424.2
• C. 212.1
• D. 168.4

Answer: (A)

For a sinusoidal voltage, the peak-to-peak value is the total voltage swing from the positive peak to the negative peak. Because the waveform is symmetric, the negative peak is the opposite sign of the positive peak, so the peak-to-peak equals twice the peak value: Vpp = 2 × Vpeak. With a peak value of 424.2 V, the peak-to-peak voltage is 2 × 424.2 = 848.4 V. The other numbers would represent only the peak value or fractions of it, not the full swing from top to bottom.

For a sinusoidal voltage, the peak-to-peak value is the total voltage swing from the positive peak to the negative peak. Because the waveform is symmetric, the negative peak is the opposite sign of the positive peak, so the peak-to-peak equals twice the peak value: Vpp = 2 × Vpeak.

With a peak value of 424.2 V, the peak-to-peak voltage is 2 × 424.2 = 848.4 V. The other numbers would represent only the peak value or fractions of it, not the full swing from top to bottom.