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Network TheoryNetwork Functions

For a linear network, the driving-point impedance at a port is defined as?

  • AVoltage at the port divided by current entering the same port
  • BCurrent at one port divided by voltage at another port
  • COutput power divided by input voltage
  • DVoltage multiplied by current
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Correct Answer: A. Voltage at the port divided by current entering the same port
Explanation: A driving-point impedance relates voltage and current at the same pair of terminals: Z(s)=V(s)/I(s).
Reference: Standard network theory: driving-point impedance
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