The formula to calculate the root mean square voltage (VRMS) is:
\[ V_{RMS} = V_{peak} \times 0.7071 \]
Where:
VRMS stands for root mean square voltage and it is a measure of the average voltage of the root mean of a sine wave voltage.
For instance, if the peak voltage (Vpeak) is 10 V, the RMS voltage (VRMS) can be calculated as follows:
\[ V_{RMS} = 10 \times 0.7071 \approx 7.07 \text{ V} \]
So, the RMS voltage for a peak voltage of 10 V is approximately 7.07 V.