The characteristics equation of the series RLC circuit is:
1
\(s^2 + (LC)s + \frac{R}{L} = 0\)
2
\(s^2 + (\frac{1}{LC})s + \frac{R}{L} = 0\)
3
\(s^2 + \left( {\frac{R}{L}} \right)s + LC = 0\)
4
\(s^2 + \left( {\frac{R}{L}} \right)s + \dfrac{1}{LC} = 0\)