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Home ‣ Electronics ‣ RL Circuits Comments
  • Question

  • If a 7.5 kΩ resistance is connected to a 10 kΩ inductive reactance in a series RL circuit, then the impedance equals 12.5 kΩ .


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  • A. True
  • B. False

  • Correct Answer
  • True 

    • RL Circuits problems

    Search Results

    • 1. For series ac circuits containing both resistance and inductive reactance, total opposition to current can be found by simply adding ohmic values or oppositions to current.

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. If Y = 20 mS, then Z = 20.

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    • A. True
    • B. False
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    • 3. 

      The impedance of the circuit in the given circuit is 110 Ω .


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    • A. True
    • B. False
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    • 4. 

      The circuit in the given circuit is a low-pass filter.


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    • A. True
    • B. False
      • Discuss
    • 5. The current lags the source voltage in a series RL circuit.

    • Options
    • A. True
    • B. False
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    • 6. In a series RL circuit, a power factor of 0.5 results in less energy conversion to heat than does a power factor of 0.6.

    • Options
    • A. True
    • B. False
      • Discuss
    • 7. Phase angle is the difference in phase between the applied voltage (VS) and the circuit current (IT).

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    • A. True
    • B. False
      • Discuss
    • 8. As the frequency increases in a series RL circuit the impedance also increases.

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    • A. True
    • B. False
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    • 9. The phase angle will increase in a parallel RL circuit if the resistance is increased.

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    • A. True
    • B. False
      • Discuss
    • 10. The frequency at which XL = R in an RL circuit is called the _______________.

    • Options
    • A. cutoff frequency
    • B. optimum frequency
    • C. bandwidth characteristic
    • D. resonant frequency
      • Discuss

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