AC theoryQuestion 992 of 1506

What is admittance?

  1. The reciprocal of resistance only
  2. The sum of resistance and reactance
  3. The reciprocal of impedance
  4. The opposition of a coil to flux
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Correct answer: The reciprocal of impedance

Admittance (Y) shows how much current is admitted. It is complex, like impedance, and is measured in siemens.

Source: Lessons in Electric Circuits II: AC (Kuphaldt), 5.5: Susceptance and Admittance

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Questions last reviewed: 18 October 2026