Energy density in a dielectric

by likephysics
Tags: density, dielectric, energy
likephysics is offline
Mar16-09, 12:02 AM
P: 596
Just want to verify the energy density in a dielectric formula u = 1/2*K*epsilon*Ed^2
Ed is the electric field in the dielectric. K is the dielectric constant.
shouldn't it be just 1/2 epsilon Ed^2
Why K, we already take the electric field in side the dielectric.
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