Why is the electric field of a dielectric in a capacitor not just cancelled out outside?
Physics Asked on August 8, 2021
As far as I know, a charged plate capacitor produces an electric field between the plates but outside the plates, the fields from the two plates as opposite just cancel out. If we can imagine a dielectric as an array of plates with different charges why its fields just don’t cancel out outside the material like in the case of two metal plates?
One Answer
If we let $L$ be the side length of the plates and $D$ the distance between them, so that $Lgg D$. We can forget the border effects, and the field outside is still zero. Why are you saying that the field outside is non-zero?
Answered by winter465 on August 8, 2021
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