Answer to Question #112376 in Field Theory for Milena

Question

Inner radius is R and outer radius 3R, charge density is p, negatively charged, long cylinder. This cylinder is immersed in a dielectric constant k= 80 (clean water), then what is the electric field strength of the cylinder axes from distance 5R. Write E5R wtih R,p and ε0.

Answer 1

We will apply gauss law here which says that charge enclosed is equal to electric flux