AC Circuits Fundamentals
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Questions and Answers

What is the impedance of the circuit at 60.0 Hz?

  • 188 Ω
  • 1.13 Ω
  • 531 Ω (correct)
  • 40.0 Ω

What is the value of XL at 10.0 kHz?

  • 3.18 Ω
  • 188 Ω (correct)
  • 1.13 Ω
  • 531 Ω

What is the current Irms at 10.0 kHz if Vrms is 120 V?

  • 0.119 A
  • 0.226 A
  • 0.765 A
  • 0.633 A (correct)

What is the inductive reactance of a 3.00 mH inductor when a 10.0 kHz AC voltage is applied?

<p>188 Ω (A)</p> Signup and view all the answers

What is the formula for calculating the resonant frequency f0?

<p>f0=1/(2π√LC) (B)</p> Signup and view all the answers

What is the rms current when a 120 V, 60.0 Hz AC voltage is applied to a 3.00 mH inductor?

<p>10.62 A (D)</p> Signup and view all the answers

What is the value of XC at 60.0 Hz?

<p>531 Ω (B)</p> Signup and view all the answers

What is the primary function of inductors and capacitors in tuning circuits?

<p>To select signals (C)</p> Signup and view all the answers

What is affected by any metal object in the path of an inductive-loop detector?

<p>The inductance of the circuit (B)</p> Signup and view all the answers

What is the role of the resistor in the RLC series circuit?

<p>It increases the impedance of the circuit (C)</p> Signup and view all the answers

What is the purpose of inductive-loop detectors in airport security systems?

<p>To indicate the approximate location of metal found on a person (C)</p> Signup and view all the answers

What is the formula to calculate the inductive reactance of an inductor?

<p>XL = 2πfL (B)</p> Signup and view all the answers

What is the defining characteristic of Alternating Current (AC) circuits?

<p>The magnitude and direction of current and voltage changes at a regular interval of time (B)</p> Signup and view all the answers

What is inductive reactance related to?

<p>The magnetic field surrounding a wire or a coil carrying current (A)</p> Signup and view all the answers

What is the formula to calculate capacitive reactance, XC?

<p>XC = 1/(2πfC) (C)</p> Signup and view all the answers

What is the unit of capacitive reactance, XC?

<p>Ohm (A)</p> Signup and view all the answers

What is the rms current if the applied rms voltage is 120 V and XC is 531Ω?

<p>0.22 A (B)</p> Signup and view all the answers

What is the reactance of a 4.5 mH inductor at 1 kHz?

<p>28.27 Ω (C)</p> Signup and view all the answers

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