Capacitors and inductors

Capacitors and inductors

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There are three important fundamental circuit elements: the resistor, capacitor, and inductor. The resistor (R) has been discussed in circuit analysis in the previous chapters. The other two elements-the capacitor (C) and inductor (L) will be introduced in this chapter. The capacitor and inductor can store energy that has been absorbed from the power supply, and release it to the circuit. A capacitor can store energy in the electric field. An inductor can store energy in the magnetic field. A resistor consumes or dissipates electric energy. A circuit containing only resistors has limited applications. Practical electric circuits usually combine the above three basic elements and possibility along with other devices.

Chapter Contents:

  • 6.1 Capacitors
  • 6.1.1 Three basic circuit components
  • 6.1.2 Capacitors
  • 6.1.3 Charging a capacitor
  • 6.1.4 How does a capacitor store energy?
  • 6.1.5 Discharging a capacitor
  • 6.1.6 Capacitance
  • 6.1.7 Calculating capacitance
  • 6.1.8 Factors affecting capacitance
  • 6.1.9 Leakage current and breakdown voltage
  • 6.1.10 Relationship between the ν and i of a capacitor
  • 6.1.11 Ohm's law for a capacitor
  • 6.1.12 Energy stored by a capacitor
  • 6.2 Capacitors in series and parallel
  • 6.2.1 Total or equivalent capacitance
  • 6.2.2 Capacitors in series
  • 6.2.3 Capacitors in parallel
  • 6.2.4 Physical properties of parallel Ceq
  • 6.2.5 Capacitors in series–parallel
  • 6.3 Inductors
  • 6.3.1 Electromagnetic induction
  • 6.3.2 Faraday's law
  • 6.3.3 Lenz's law
  • 6.3.4 Inductors
  • 6.3.5 Self-inductance
  • 6.3.6 Ohm's law for an inductor
  • 6.3.7 Factors affecting inductance
  • 6.3.8 Energy stored in an inductor
  • 6.3.9 Calculating the energy stored in an inductor
  • 6.3.10 Winding resistor of an inductor
  • 6.4 Inductors in series and parallel
  • 6.4.1 Series and parallel inductors
  • 6.4.2 Inductors in series–parallel
  • Summary
  • Practice problems

Inspec keywords: inductors; magnetic fields; inductive energy storage; capacitor storage; electric fields; capacitors

Other keywords: magnetic field; resistors; capacitors; circuit analysis; inductors; electric field; energy storage

Subjects: Inductors and transformers; Electric and magnetic fields; Capacitors

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