In the same circuit, what is the phase angle of the impedance?

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Multiple Choice

In the same circuit, what is the phase angle of the impedance?

The phase angle of impedance is the angle of the impedance vector Z = R + jX, found from θ = arctan(X/R). This angle tells you how the circuit’s resistance and reactance combine to shift the phase between voltage and current. A positive phase angle means there is inductive reactance (X > 0), so the voltage leads the current by that angle; a negative angle would mean capacitive reactance (X < 0), and the current leads the voltage. A value of about 6 degrees indicates a small inductive component relative to resistance. In other words, the impedance is mildly inductive, and current lags the voltage by roughly 6 degrees. If the angle were 0°, the circuit would be purely resistive. If it were 90°, it would be purely reactive with no resistance. If the angle were -6°, it would be a small capacitive case with the current leading the voltage by about 6 degrees.

The phase angle of impedance is the angle of the impedance vector Z = R + jX, found from θ = arctan(X/R). This angle tells you how the circuit’s resistance and reactance combine to shift the phase between voltage and current. A positive phase angle means there is inductive reactance (X > 0), so the voltage leads the current by that angle; a negative angle would mean capacitive reactance (X < 0), and the current leads the voltage.

A value of about 6 degrees indicates a small inductive component relative to resistance. In other words, the impedance is mildly inductive, and current lags the voltage by roughly 6 degrees. If the angle were 0°, the circuit would be purely resistive. If it were 90°, it would be purely reactive with no resistance. If the angle were -6°, it would be a small capacitive case with the current leading the voltage by about 6 degrees.

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