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Impedance - Meaning, Definition & English Examples

Impedance is the measure of opposition a circuit presents to alternating current, combining resistance and reactance. It is crucial in designing electrical and electronic systems for efficient power transfer.

impedance

/ɪmˈpiːdəns/ /ɪmˈpiːdəns/

Definition:

The opposition to the flow of electric current in a circuit, combining resistance and reactance.

Synonyms:

resistance, opposition, hindrance, obstruction

Part of Speech:

noun

Antonyms:

conductance, facilitation

Common Collocations:

electrical impedance, high impedance, low impedance, impedance matching

Derivatives:

impedances (plural), impedential (adjective)

Usage Tips:

Use "impedance" in electrical contexts to describe opposition to current flow; avoid in general language for simpler terms like "resistance."

Common Phrases:

impedance mismatch, characteristic impedance, input impedance

Etymology:

From Latin "impedire" (to hinder) + "-ance," first used in electrical engineering in the late 19th century.

Examples:

  • 1. The speaker's high impedance caused audio distortion.
  • 2. Impedance matching ensures efficient power transfer in circuits.
  • 3. The engineer measured the circuit's impedance with precision.
  • 4. Low impedance headphones deliver clearer sound quality.

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