Copyright © Michael Richmond.
This work is licensed under a Creative Commons License.
Dielectrics
This lecture is based on Serway, Sections 26.5 and 26.7.
- A dielectric material is one which consists of molecules with
some dipole electric moment.
- The molecules may be polarized in an external electric field,
setting up an internal electric field which counteracts
the external one (but doesn't cancel it completely)
- The net electric field within a dielectric material is equal to
"kappa" times the external electric field, where "kappa"
is the "dielectric constant" of the material
- Placing a dielectric material between the plates of a capacitor
increases its capacitance by a factor of "kappa"
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Copyright © Michael Richmond.
This work is licensed under a Creative Commons License.