# Electromagnetic Field Energies in Capacitors and Inductors

Requires a Wolfram Notebook System

Interact on desktop, mobile and cloud with the free Wolfram CDF Player or other Wolfram Language products.

Requires a Wolfram Notebook System

Edit on desktop, mobile and cloud with any Wolfram Language product.

A capacitor with square plates of width separated by a distance with a filler of dielectric constant (relative permittivity) has a capacitance given by . Typical values are in the range of picofarads (pF). A voltage can hold positive and negative charges on the plates of the capacitor while producing an internal electric field . Assuming idealized geometry, the energy of a charged capacitor equals . This energy can be considered to be stored in the electric field, which implies a corresponding energy density (with ).

[more]
Contributed by: S. M. Blinder (May 2010)

Open content licensed under CC BY-NC-SA

## Snapshots

## Details

## Permanent Citation