- #1

- 29

- 12

**In a linear isotropic homogeneous dielectric,**

P= χε

P

_{0}*

**E**,

where

**E**is the net electric field from the effects of both free and bound charges.

But

**E**=(σ

_{free}—

**P**)/ε

_{0}

So

**E**itself depends on P.

My concern is, isn't this circular? How can the polarization density depend on a field that itself depends on it? Shouldn't it depend on the original field between the conducting plates,

**E**, given by

_{0}**E**=σ

_{0}_{free}/ε

_{0}?