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السؤال 254

What is the phase angle between the voltage across and the current through a series RLC circuit if XC is 25 ohms, R is 100 ohms, and XL is 75 ohms?

  1. 27 degrees with the voltage lagging the current
  2. 27 degrees with the voltage leading the currentالإجابة الصحيحة
  3. 63 degrees with the voltage lagging the current
  4. 63 degrees with the voltage leading the current

الشرح

Here the inductive reactance exceeds the capacitive reactance, leaving a net reactance of +50 Ω, so the circuit is inductive. The arctangent of 50/100 is about 27°, and in an inductive circuit the voltage leads the current.

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السؤال 254: What is the phase angle between the voltage across and the… · FCC Amateur Extra Class (Element 4) · Questena