What occurs in an LC circuit at resonance?

In an LC circuit (a circuit containing an inductor and a capacitor), inductive reactance and capacitive reactance change with frequency in opposite directions. At the specific frequency known as resonance, these two reactances become exactly equal in magnitude but opposite in phase. Because they are equal and opposite at this specific frequency, they effectively cancel each other out. This leaves only the purely resistive components of the circuit (like the physical resistance of the wires) to impede the flow of current. Distractors like "current and voltage are equal" are incorrect because current and voltage are measured in completely different units and cannot be equated. "Resistance is cancelled" is also wrong because resonance only cancels reactance, leaving the inherent resistance intact.