A series circuit containing R, L, and C is excited by a step voltage input. The voltage across the capacitance exhibits oscillations. Damping coefficients (ratio) of circuit is given by
1
\(\dfrac{R}{2\sqrt{LC}}\)
2
\(\dfrac{R}{{LC}}\)
3
\(\dfrac{R}{2\sqrt{\dfrac{C}{L}}}\)
4
\(\dfrac{R}{2\sqrt{\dfrac{L}{C}}}\)