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Question
Answer in brief.
What is the natural frequency of the LC circuit? What is the reactance of this circuit at this frequency?
Solution
- The natural frequency of LC circuit is `1/(2pisqrt"LC")`,
- where L is the inductance and C is the capacitance. The reactance of this circuit at this frequency is frequency.
`f_r = 1/(2pi sqrt(LC))` - At resonance, as XL = XC total reactance is given as
|XL - XC| = 0 ....(∵ XL = XC) - Therefore, the reactance of the LC circuit at natural frequency is zero
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