reactance

Examples of reactance in the following topics:

• Resonance in RLC Circuits

  • The reactances vary with frequency $\nu$, with XL large at high frequencies and XC large at low frequencies given as:
  • At some intermediate frequency $\nu_0$, the reactances will be equal and cancel, giving Z=R —this is a minimum value for impedance, and a maximum value for Irms results.

• Capacitors in AC Circuits: Capacitive Reactance and Phasor Diagrams

  • However, the value of Vmax/Imax is useful, and is called the capacitive reactance (XC) of the component.

• Inductors in AC Circuits: Inductive Reactive and Phasor Diagrams

  • XL is called the inductive reactance.

• Cathode Ray Tube, TV and Computer Monitors, and the Oscilloscope

  • Oscilloscopes use electrostatic rather than magnetic deflection because the inductive reactance of the magnetic coils would limit the frequency response of the instrument.