The expression 2\pi\sqrtLC is commonly used in electrical engineering to calculate the resonant frequency of an LC circuit. In this formula, L represents the inductance measured in henries, and C represents the capacitance measured in farads. The resonant frequency indicates the frequency at which the circuit can oscillate with maximum amplitude. At resonance, the inductive and capacitive reactances cancel each other out, allowing the circuit to efficiently transfer energy. This principle is crucial in various applications, including radio transmitters and receivers, where tuning to a specific frequency is essential for optimal performance.