Final answer:
The peak-to-peak value of a sinusoidal waveform is double the peak voltage (Vo). If the rms voltage (Vrms) is 120 V, the peak voltage Vo is approximately 170 V, thus the peak-to-peak voltage would be 340 V.
Step-by-step explanation:
The peak-to-peak value of a sinusoidal waveform is the difference between the maximum positive and the maximum negative amplitudes of the wave. To find the peak-to-peak voltage, one must double the peak voltage (Vo). Given the root mean square (rms) voltage value, Vrms, the peak voltage is calculated using the relationship Vo = √2Vrms. If Vrms is 120 V, then Vo would be √2 × 120 V which equals approximately 170 V. Therefore, the peak-to-peak voltage is 2Vo, which translates to 2 × 170 V, giving us a peak-to-peak value of 340 V.