# Gauss's law, cylinder of length L

by lidl
Tags: cylinder, gauss, length
 P: 10 http://img404.imageshack.us/img404/4148/gauss3j.png (infinitly long) $\Phi=\Phi_{0}(1-{r \over R}) {C \over m^2}$ What's the charge of the cylinder of length L? Again, almost everything was wrong...
 P: 289 Gauss's law, cylinder of length L You need to be much clearer in the problem statement and your work. Is the cylinder hollow? What do r, R, $$\Phi$$, and $$\Phi_0$$ represent? Also, it's probably OK to write notes in your homework like "the electric field points radially outward so the flux through the top and bottom of the gaussian cylinder is zero" rather than relying on vague drawings