Pronunciation: [ɪmpˈiːdəns] (IPA) 
The word "impedance" is pronounced /ɪmˈpiːdəns/ and is spelled with a "p" and not a "b" because it comes from the Latin word "impedire" meaning "to hinder". The "p" sound is derived from the Latin "p" while the "b" sound comes from "imbrex" meaning "roof tile". The word "impedance" refers to the measure of resistance to an electric current when applied to a circuit. It is a key concept in electrical engineering and physics.
Impedance is an electrical term that refers to the measure of opposition a circuit presents to the flow of alternating current (AC). It is a complex quantity characterized by both magnitude and phase angle, and is denoted by the symbol "Z".
Impedance takes into consideration the resistance, inductance, and capacitance present in a circuit. Resistance, measured in ohms, represents the opposition to the flow of current in a circuit due to the presence of resistors or conductors. Inductance, measured in henries, reflects the opposition to the change in current flow due to the presence of inductors, while capacitance, measured in farads, represents the opposition to changes in voltage due to the presence of capacitors.
The magnitude of impedance denotes the overall amount of opposition to the flow of current, whereas the phase angle indicates the phase shift between the voltage and current waveforms in the circuit.
Impedance plays a crucial role in determining how a circuit responds to the presence of alternating current signals. It affects the amplitude and phase of voltages and currents within the circuit, determining factors such as power transfer, signal distortion, and frequency response. Matching impedance between different components of a circuit is essential for efficient power transfer and preventing signal reflections or loss.
Impedance is widely used in fields such as electrical engineering, telecommunications, audio systems, and signal processing for the analysis, design, and optimization of circuits and systems.
* The statistics data for these misspellings percentages are collected from over 15,411,110 spell check sessions on www.spellchecker.net from Jan 2010 - Jun 2012.
The word "impedance" originated from the Latin word "impedire", which means "to impede" or "to hinder". The term was first used in the field of electricity in the 19th century and comes from the idea of hindering or opposing the flow of electrical current in a circuit.
