Red Seal Electrician Practice
DC circuitsQuestion 845 of 1506

What are the basic parts of every capacitor?

  1. Two coils on one iron core
  2. One conductor wrapped in a magnetic shield
  3. Two insulators separated by a conductor
  4. Two conductors separated by a thin insulator layer
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Correct answer: Two conductors separated by a thin insulator layer

Different capacitors are built in different ways, but all use two conductive plates with an insulating dielectric between them.

Source: Lessons in Electric Circuits I: DC (Kuphaldt), 13.1: Electric Fields and Capacitance

Practice dc circuits

Questions last reviewed: 18 October 2026