The difference between the highest and lowest voltage of a household "120 V emf" is
A) 120 V.
B) 170 V.
C) 240 V.
D) 340 V.
E) 377 V.

Question

Quizplus · Accepted Answer

The household voltage of 120 V refers to the root mean square (RMS) voltage. The peak voltage (V_peak) is calculated as V_peak = V_rms * √2. For 120 V RMS, the peak voltage is approximately 170 V. The difference between the highest (peak-to-peak) and lowest voltage is twice the peak voltage, which is 2 * 170 V = 340 V.

The Difference Between the Highest and Lowest Voltage of a Household