What are the characteristics of a circuit at resonance?

At resonance, a circuit exhibits maximum voltage across the load with minimal impedance, leading to maximum current flow. The inductive and capacitive reactances are equal in magnitude but opposite in phase, resulting in their cancellation. This condition enhances the circuit's ability to select specific frequencies, making it highly efficient for applications like tuning and filtering. Additionally, the circuit's bandwidth is at its narrowest, concentrating energy around the resonant frequency.