Impedance is measured in

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Multiple Choice

Impedance is measured in

Explanation:
Impedance describes how much a circuit resists current flow in AC, taking into account both resistance and reactance. Its unit is the ohm (Ω) because impedance is defined as Z = V / I, which is volts per ampere. That simplifies to an ohm, the standard unit for opposition to current. In purely resistive circuits, impedance equals resistance and is measured in ohms; in more complex AC circuits, the impedance has a magnitude in ohms and a phase angle due to reactance. The other units measure different quantities—watts for power, volts for voltage, and amperes for current—so they aren’t the unit for impedance.

Impedance describes how much a circuit resists current flow in AC, taking into account both resistance and reactance. Its unit is the ohm (Ω) because impedance is defined as Z = V / I, which is volts per ampere. That simplifies to an ohm, the standard unit for opposition to current. In purely resistive circuits, impedance equals resistance and is measured in ohms; in more complex AC circuits, the impedance has a magnitude in ohms and a phase angle due to reactance. The other units measure different quantities—watts for power, volts for voltage, and amperes for current—so they aren’t the unit for impedance.

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