# Gausses Law

1. Jan 16, 2006

### ice87

http://noether.physics.ubc.ca/Physics153/assignt222k6.pdf
^ number 2.

I dont get this problem. if the plastic sheets are non-conducting, does that mean the electric field cant penetrate the sheets? and how should i do this problem?

Last edited by a moderator: Apr 21, 2017
2. Jan 20, 2006

### Tom Mattson

Staff Emeritus
3. Jan 20, 2006

### lightgrav

Nonconducting means that the charges stay where they're put.
Since they don't tell you a dielectric constant (polarization $$\kappa$$),
presume that there is ZERO polarization in the material ...
the E-field is completely uneffected by the plastic (but NOT the charges!).

Start by enclosing all 4 charged surfaces
(but not the negative charge at infinity ...)

Incidently, the distance of the point from the surfaces is unimportant.