The resonent froquengy in an anti resonant circuitis:
a \frac{1}{2 \mathrm{~s} \sqrt{L C}}
b \frac{1}{2 \mathrm{~s}} \sqrt{\frac{1}{\mathrm{LC}}-\frac{\mathrm{R}^{2}}{\mathrm{~L}^{2}}}
c \frac{1}{2 \mathrm{~s}} \sqrt{1 . \mathrm{C}}
D \frac{1}{2 \pi} \sqrt{\frac{C}{L}}
The resonent froquengy in an anti resonant circuitis:
a \frac{1}{2 \mathrm{~s} \sqrt{L C}}
b \frac{1}{2 \mathrm{~s}} \sqrt{\frac{1}{\mathrm{LC}}-\frac{\mathrm{R}^{2}}{\mathrm{~L}^{2}}}
c \frac{1}{2 \mathrm{~s}} \sqrt{1 . \mathrm{C}}
D \frac{1}{2 \pi} \sqrt{\frac{C}{L}}

Correct option is a \frac{1}{2 \pi \sqrt{L C}}
For rescnance

    \[\mathrm{X}_{\mathrm{L}}=\mathrm{X}_{\mathrm{E}}\]

    \[\begin{aligned} \mathrm{kL} &=\frac{1}{\mathrm{wC}} \\ \mathrm{w} &=\frac{1}{\mathrm{LC}} \end{aligned}\]

    \[\mathrm{D}=\frac{\mathrm{l}}{\sqrt{\mathrm{LC}}}\]

    \[2 \pi i=\frac{1}{\sqrt{1 C}}\]

    \[\mathrm{f}=\frac{1}{\mathrm{~g} \pi / \mathrm{TC}}\]