The wave form of constant DC voltage on a lab scope is represented as what?

The waveform of constant DC voltage is represented as a flat line on a lab scope because a direct current (DC) voltage maintains a steady value over time. Unlike alternating current (AC), which fluctuates and can create sine or square waves, a DC voltage remains constant, meaning the graphical representation on an oscilloscope would show a horizontal line at the level of that voltage without any peaks or troughs.

When observing a flat line, the oscilloscope indicates that the voltage is not changing; it is stable, which is characteristic of DC power. A flat line reflects that there are no variations or cycles occurring in the voltage level, highlighting the fundamental nature of a constant DC voltage supply.