An ideal inductor and an ideal capacitor are connected in parallel. At a certain frequency Xʟ = Xᴄ. What is the equivalent impedance of this ideal parallel LC combination?
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An ideal inductor and an ideal capacitor are connected in parallel. At a certain frequency Xʟ = Xᴄ. What is the equivalent impedance of this ideal parallel LC combination?

G1 Physics · Accepted Answer

At Xʟ=Xᴄ, the inductive and capacitive susceptances are equal and opposite. Hence the net admittance is zero and the ideal equivalent impedance tends to infinity.