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What is the technical equivalent of impedance in an AC circuit?
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We know that this term speaks to the capacity of a circuit to resist the flow of current.
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Impedance, represented with the letter capital π, has two primary components to it.
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One is the resistance, capital π
, of the circuit, measured in ohms, and the other is called the inductive reactance, π sub πΏ.
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In an AC circuit, thereβs a 90-degree phase difference between the inductive reactance and resistance, meaning that impedance, π, is not equal to their linear sum, but rather to their combination according to the Pythagorean theorem.
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Written as an equation, we can say that impedance is equal to the square root of π
squared plus π sub πΏ squared.
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We can say then that impedance is the sum, understanding it to be a vector sum, of resistance and inductive reactance.
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Thatβs the technical equivalent of impedance in an AC circuit.