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Network TheorySecond-Order Circuits

A second-order characteristic equation is s^2 + 6s + 25 = 0. Comparing with s^2 + 2 zeta omega_n s + omega_n^2, the natural frequency omega_n is?

  • A5 rad/s
  • B6 rad/s
  • C12.5 rad/s
  • D25 rad/s
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Correct Answer: A. 5 rad/s
Explanation: omega_n^2=25, so omega_n=5 rad/s.
Reference: Standard network theory: second-order circuits
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