In a circuit that contains a dc voltage source of 15 V and an ac voltage source of 50 Vp and a resistive load, what would be the maximum and minimum voltage measured across the resistive load?
A) VMAX = zero V, VMIN = 35 V
B) VMAX = 65 V, VMIN = zero V
C) VMAX = 35 V, VMIN = 65 V
D) VMAX = 65 V, VMIN = 35 V

Question

Quizplus · Accepted Answer

The maximum voltage (VMAX) across the resistive load is the sum of the DC voltage and the peak AC voltage: 15 V + 50 V = 65 V. The minimum voltage (VMIN) is the DC voltage minus the peak AC voltage: 15 V - 50 V = -35 V, but since voltage cannot be negative across a resistive load, it is considered as 35 V.

In a Circuit That Contains a Dc Voltage Source of 15