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PRACTICE / Reactance

A capacitor under alternating voltage

An ideal capacitor of 100 μF is driven at angular frequency 500 rad/s.

Find its capacitive reactance magnitude.

Organize the givens & assumptions
  • C = 100×10⁻⁶ F
  • ω = 500 rad/s

Ideal capacitor in sinusoidal steady state; C = 100 μF and ω = 500 rad/s; no dielectric losses.

  1. A20 Ω20\ \Omega
  2. B0.05 Ω0.05\ \Omega
  3. C10/π Ω10/\pi\ \Omega
  4. D200 Ω200\ \Omega

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