Question
What letter is commonly used to represent susceptance?
Answer Options
- A) G
- B) X
- C) Y
- D) B
Correct Answer: D
Explanation
In AC circuit analysis, impedance (Z) is the measure of the opposition to current flow. Admittance (Y) is the reciprocal of impedance (Y = 1/Z), representing how easily current flows. Both impedance and admittance are complex numbers consisting of real and imaginary parts.
Admittance (Y) is composed of a real part, conductance (G), and an imaginary part, susceptance (B). Susceptance represents the reactive component of admittance (the reciprocal of reactance, X). Therefore, the letter commonly used to represent susceptance is B. The relationship is Y = G + jB for admittance, which is analogous to Z = R + jX for impedance.
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