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Network TheoryTwo-Port Networks

For Z=[[4,2],[2,3]] ohm, the element y11 of Y=Z^{-1} is?

  • A0.125 S
  • B0.25 S
  • C0.375 S
  • D0.50 S
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Correct Answer: C. 0.375 S
Explanation: det(Z)=4×3-2×2=8. Z^{-1}=(1/8)[[3,-2],[-2,4]], so y11=3/8=0.375 S.
Reference: Standard network theory: z-to-y conversion numerical
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