RLC circuit

RLC circuit

• A. A circuit with only a resistor
• B. A circuit with a resistor and capacitor
• C. A circuit with a resistor, capacitor, and inductor
• D. A circuit with a resistor and inductor

Answer: (C)

RLC circuits are defined by containing all three basic passive components: a resistor, a capacitor, and an inductor. The resistor dissipates energy as heat, the capacitor stores energy in an electric field and responds to changes in voltage, and the inductor stores energy in a magnetic field and responds to changes in current. When all three are present, their interactions determine the circuit’s impedance and how it responds to different frequencies and transients, including the possibility of resonance where the reactive effects of the capacitor and inductor cancel each other out. If any component is missing, you no longer have a full RLC circuit: a circuit with only a resistor lacks energy storage elements, a resistor and capacitor misses the inductor, and a resistor and inductor misses the capacitor. The circuit that includes all three components is the RLC circuit.

RLC circuits are defined by containing all three basic passive components: a resistor, a capacitor, and an inductor. The resistor dissipates energy as heat, the capacitor stores energy in an electric field and responds to changes in voltage, and the inductor stores energy in a magnetic field and responds to changes in current. When all three are present, their interactions determine the circuit’s impedance and how it responds to different frequencies and transients, including the possibility of resonance where the reactive effects of the capacitor and inductor cancel each other out. If any component is missing, you no longer have a full RLC circuit: a circuit with only a resistor lacks energy storage elements, a resistor and capacitor misses the inductor, and a resistor and inductor misses the capacitor. The circuit that includes all three components is the RLC circuit.