Difference between Capacitor and Inductor

Main Difference

capacitor and inductor are both passive electrical devices used in electrical circuits. They both differ in their functionality and construction. An inductor, also known as a coil or even a reactor, can be described as a passive two-terminal electric element which generally avoids modifications in electric current moving by it. This is made up of the conductor, for example, a wire normally wound right into a coil. Power is actually saved in a magnetic field inside the coil provided that currently passes through it. Whereas, A capacitor sometimes  referred to as a condenser  is also a passive categorized two-terminal electrical element accustomed to keeping electrical power for the short term within an electrically powered field. The actual kinds of functional capacitors differ extensively, however almost all incorporate a minimum of a few electric powered conductors  segregated by way of a dielectric


capacitors_7189597135As the capacitors are utilized to store charges. Non conducting dielectric functions to improve the capacitor’s charge capability. A dielectric could be glass, ceramic, plastic film, air, vacuum, paper, mica, oxide layer  and many more. Capacitors are traditionally used as elements of electric powered circuits in several typical electrical products. In contrast to a resistor, a perfect capacitor doesn’t disappear energy. As an alternative, a capacitor saves power by means of a good electrostatic field in between its plates. When there’s a voltage distinction throughout the conductors in the case whenever a capacitor will be connected across a battery, an electric powered field evolves across the dielectric, leading to positive charge +Q to gather on a single plate and negative charge -Q to gather alternatively on the other plate. In case an electric battery has been linked to a capacitor for any adequate period of time, absolutely no current may stream through the capacitor. Nevertheless, in case a time-varying voltage is utilized throughout the prospects belonging to the capacitor, a displacement current may  also flow.


inductorAn inductor, also known as a coil or sometimes a reactor, is a passive two-terminal electric powered component that withstands alterations in electric energy moving through it. This includes a conductor say for example a cable, generally wound right into a coil. Power is saved in a magnetic field within the coil provided that current flows. Once the current moving with an inductor shifts, the time-varying magnetic field causes a voltage within the conductor, in accordance with Faraday’s law of electromagnetic induction. According to Lenz’s law, the particular path associated with induced e.m.f is definitely in a way that it is contrary to the alteration in current that produced it. Consequently, inductors generally are at odds of a general change in current, in the same manner that a flywheel opposes a modification of rotational velocity. An inductor is seen as its inductance, the number of the particular voltage to the rate associated with a change of current, that has units of henries (H). Inductors possess values which usually vary from 1 µH  to 1 H. Numerous inductors possess a magnetic core manufactured from metal or even ferrite within the coil, which usually acts to improve the particular magnetic field and, therefore, the particular inductance. inductors are also passive component similar to capacitor and resistor.

Key Differences

  • Absolutely no current goes through a capacitor‘s plates whereas, current passes through the coils in an inductor.
  • In inductor currents lags the voltage whereas in capacitor current leads the voltage.
  • In a capacitor, dielectric plays a vital role in the capacitors capacitance but in the inductor, there is no such phenomenon.
  • Capacitor and Inductor have opposite phasor diagrams.
  • Capacitors are meant to store electric field in its plates whereas inductor stores magnetic field in its coil
  • Capacitors act as an open circuit for DC whereas Inductor acts as a short circuit for DC in an electrical
  • Power is saved in the inductor in terms of current whereas it is stored in terms of voltage in the capacitor.
  • Capacitance units are Farad whereas inductance is measured in Henries.
  • Inductors are widely used in AC applications whereas capacitance is used in high voltages.

Video Explanation

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