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Network TheoryNetwork Functions

A zero of a driving-point impedance Z(s) becomes what in the corresponding admittance Y(s)=1/Z(s), assuming no cancellation?

  • AA zero
  • BA pole
  • CA constant
  • DA branch current source
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Correct Answer: B. A pole
Explanation: Taking the reciprocal interchanges poles and zeros, so a zero of Z becomes a pole of Y.
Reference: Standard network theory: impedance-admittance poles and zeros
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