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Network TheoryAC Circuit Analysis

For an impedance Z=3-j4 ohm, the magnitude of Z is?

  • A1 ohm
  • B5 ohm
  • C7 ohm
  • D25 ohm
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Correct Answer: B. 5 ohm
Explanation: |Z|=sqrt(3^2+(-4)^2)=5 ohm.
Reference: Standard network theory: complex impedance numerical
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