Plotting voltage versus time on axes In a V–t graph, which quantity is placed on which axis?

Introduction / Context:
Oscilloscope displays, timing diagrams, and lab plots commonly present how a signal changes over time. Understanding axis conventions ensures correct interpretation of waveforms and measurements.

Given Data / Assumptions:

• We are plotting voltage as a function of time (V vs. t).
• Standard Cartesian plot conventions apply.
• No special logarithmic or parametric plotting is implied.

Concept / Approach:
By convention, the independent variable is plotted on the horizontal axis (x-axis) and the dependent variable on the vertical axis (y-axis). When analyzing waveforms, time is the independent variable and the voltage value depends on time, so time goes on x and voltage goes on y.

Step-by-Step Solution:
1) Identify independent variable: time (t) → x-axis.2) Identify dependent variable: voltage (V) → y-axis.3) State the mapping: voltage on y, time on x.4) This matches oscilloscope practice: time base horizontal, vertical deflection proportional to voltage.

Verification / Alternative check:
Review any oscilloscope front panel: the horizontal control is the time/div setting, and the vertical control is volts/div, reflecting the same axis convention.

Why Other Options Are Wrong:
Time on y and voltage on x: Reverses the standard relationship.Either way; no convention: Incorrect—there is a widely accepted convention for functional plots and oscilloscopes.Power on y: Not relevant for a V–t graph.

Common Pitfalls:
Confusing specialized plots (e.g., X-Y mode on scopes for Lissajous figures) with standard time-domain displays; here the question explicitly states voltage versus time.

Final Answer:
voltage on the y-axis; time on the x-axis