Calculate the peak voltage of a mains supply of r.m.s value 220V

Question

Calculate the peak voltage of a mains supply of r.m.s value 220V.

Solution

Root mean square of the voltage is V_rms = 220V

Peak Voltage, V_o = ?

The formula is: V_o = V_rms x √2

Now, to solve the problem, we will use the above equation

V_o = V_rms x √2 = 220 x √2 = 220 x 1.414 = 311V

Thus, the peak voltage V_o, is 311 Volts.