Resistance to the flow of energy is called what?

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Multiple Choice

Resistance to the flow of energy is called what?

Explanation:
Opposition to energy flow in circuits, especially AC, is described by impedance. Impedance accounts for both the resistive losses that dissipate energy and the reactive effects from inductors and capacitors that store and release energy, introducing a phase difference between voltage and current. Pure resistance describes only the dissipation part, while reactance is the energy-storing part that causes phase shift. Admittance is simply the reciprocal of impedance. So the term that best matches “resistance to the flow of energy” in this broader sense is impedance.

Opposition to energy flow in circuits, especially AC, is described by impedance. Impedance accounts for both the resistive losses that dissipate energy and the reactive effects from inductors and capacitors that store and release energy, introducing a phase difference between voltage and current. Pure resistance describes only the dissipation part, while reactance is the energy-storing part that causes phase shift. Admittance is simply the reciprocal of impedance. So the term that best matches “resistance to the flow of energy” in this broader sense is impedance.

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