Which component is a coil of wire designed to take advantage of the relationship between current flow and the magnetic field created around the conductor?

Which component is a coil of wire designed to take advantage of the relationship between current flow and the magnetic field created around the conductor?

• A. Dielectric
• B. Electrolytic Capacitors
• C. Calculation of Capacitive Reactance
• D. Inductors

Answer: (D)

Inductance is at the heart of this. A coil of wire is designed to take advantage of the magnetic field that current creates around a conductor. When you wrap the wire into a coil (often with a magnetic core), the magnetic field becomes concentrated and energy is stored in that magnetic field. If the current tries to change, the changing magnetic flux induces a voltage that opposes the change, so the component resists rapid changes in current. That behavior is what an inductor does in circuits. Dielectrics relate to capacitors, which store energy in an electric field between plates. Electrolytic capacitors are a type of capacitor. Capacitive reactance is a concept used to analyze capacitors in AC circuits, not a physical coil component.

Inductance is at the heart of this. A coil of wire is designed to take advantage of the magnetic field that current creates around a conductor. When you wrap the wire into a coil (often with a magnetic core), the magnetic field becomes concentrated and energy is stored in that magnetic field. If the current tries to change, the changing magnetic flux induces a voltage that opposes the change, so the component resists rapid changes in current. That behavior is what an inductor does in circuits.

Dielectrics relate to capacitors, which store energy in an electric field between plates. Electrolytic capacitors are a type of capacitor. Capacitive reactance is a concept used to analyze capacitors in AC circuits, not a physical coil component.