Question
What kind of diagram is used to show the phase relationship between impedances at a given frequency?
Answer Options
- A) Venn diagram
- B) Near field diagram
- C) Phasor diagram
- D) Far field diagram
Correct Answer: C
Explanation
Complex impedance, as well as AC voltages and currents, can be visualized as vectors in a two-dimensional plane (the complex plane). This graphical representation simplifies the analysis of how quantities combine in series or parallel circuits.
The kind of diagram used to show the phase relationship between impedances (or voltages and currents) at a given frequency is a Phasor diagram. In a phasor diagram, each quantity (impedance, voltage, current) is represented by an arrow (phasor) whose length is the magnitude and whose angle relative to the horizontal axis is the phase angle, providing a visual way to perform vector addition.
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