Class 12 Physics AC Circuits Quiz
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Questions and Answers

In an AC circuit with a purely capacitive load, what is the phase relationship between the voltage and current?

  • They are in phase
  • Current leads voltage (correct)
  • There is no phase relationship
  • Voltage leads current
  • What is the frequency of the alternating current in a standard household electrical outlet?

  • 60 Hz
  • 40 Hz
  • 50 Hz (correct)
  • 70 Hz
  • What happens to the reactance of an inductor in an AC circuit when the frequency increases?

  • Becomes zero
  • Decreases
  • Increases (correct)
  • Remains constant
  • In an AC circuit, what happens to the reactance of an inductor when the frequency increases?

    <p>It increases</p> Signup and view all the answers

    In an AC circuit with a purely capacitive load, what is the phase relationship between the voltage and current?

    <p>The current lags the voltage by 90 degrees</p> Signup and view all the answers

    What is the frequency of the alternating current in a standard household electrical outlet in the United States?

    <p>60 Hz</p> Signup and view all the answers

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