About 982,000 results
Open links in new tab
  1. Electrical impedance - Wikipedia

    Impedance extends the concept of resistance to alternating current (AC) circuits, and possesses both magnitude and phase, unlike resistance, which has only magnitude. Impedance can be represented …

  2. Electrical Impedance: What is it? (Types & Examples)

    Oct 19, 2018 · Impedance extends the concept of resistance to alternating current (AC) circuits. Impedance possesses both magnitude and phase, unlike resistance, which has only magnitude. …

  3. What Is Impedance | AC Circuit Resistance And Reactance

    Impedance is the total opposition a cable or circuit offers to alternating current (AC). It combines resistance and reactance, measured in ohms (Ω), and determines how readily AC signals pass …

  4. Electrical impedance | Definition, Symbol, Units, & Facts - Britannica

    Electrical impedance, measure of the total opposition that a circuit or a part of a circuit presents to electric current. Impedance includes both resistance and reactance.

  5. IMPEDANCE Definition & Meaning - Merriam-Webster

    The meaning of IMPEDANCE is something that impedes : hindrance.

  6. Understanding Impedance - Digi-Key Electronics

    May 13, 2024 · Impedance, often symbolized by Z, is a comprehensive term that describes how a circuit element restricts the flow of alternating current (AC). It’s a bit more complex than resistance, which …

  7. Impedance and Complex AC Impedance - Basic Electronics Tutorials

    Oct 10, 2025 · Impedance is a value given in Ohms that is the combined effect of the circuits current limiting components within it, such as Resistance (R), Inductance (L), and Capacitance (C).

  8. How to Calculate Impedance: 10 Steps (with Pictures) - wikiHow

    Feb 24, 2025 · Impedance is the opposition of a circuit to alternating current. It's measured in ohms. To calculate impedance, you must know the value of all resistors and the impedance of all inductors and …

  9. What is electrical impedance? | Definition from TechTarget

    Sep 13, 2024 · Impedance, denoted as Z, is an expression of the opposition that an electronic component, circuit or system offers to alternating or direct electric current. Impedance is a vector …

  10. What is Impedance? - The Tech Circuit™

    Sep 5, 2022 · Impedance (Z) (also in OHMS) is the combination of all resistances and reactances in a circuit. It can contain just resistance, just capacitive reactance, just inductive reactance, or any …