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Admittance Formula:
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Admittance is the reciprocal of impedance in electrical circuit analysis. It represents how easily alternating current (AC) flows through a circuit and is measured in Siemens (S). Admittance is particularly useful in parallel circuit analysis and network theory.
The calculator uses the admittance formula:
Where:
Explanation: Admittance is the inverse of impedance, representing the ease with which current flows through a circuit. For complex impedance, both magnitude and phase angle are inverted.
Details: Admittance calculations are essential in AC circuit analysis, particularly for parallel circuits where admittances add directly. It simplifies the analysis of complex electrical networks and is fundamental in impedance matching and filter design.
Tips: Enter impedance value in ohms. The value must be positive and non-zero. For complex impedance calculations, use the magnitude of the impedance.
Q1: What is the difference between impedance and admittance?
A: Impedance (Z) measures opposition to current flow, while admittance (Y) measures how easily current flows. They are reciprocals: Y = 1/Z.
Q2: What are the units of admittance?
A: Admittance is measured in Siemens (S), which is equivalent to mhos (℧).
Q3: How is complex admittance calculated?
A: For complex impedance Z = R + jX, the complex admittance is Y = G + jB = 1/(R + jX), where G is conductance and B is susceptance.
Q4: When is admittance more useful than impedance?
A: Admittance is particularly useful in parallel circuit analysis because admittances in parallel add directly, similar to how conductances add in DC circuits.
Q5: What is the relationship between admittance and impedance in polar form?
A: If impedance Z = |Z|∠θ, then admittance Y = 1/|Z|∠-θ. The magnitude is inverted and the phase angle is negated.