There is a rod that is 50cm long and has a radius of 1cm that carries a charge of 2uC distributed uniformly over its length. What would be the value of the magnitude of the electric field. (a) 4.0 mm from the rod surface, not either end

Question

So far I have 2(8*10^-6)(9*10^9)/.55=261818/1.4= 1.9*10^6

Answer 1

And what do these numbers represent? Did you read my prior post? http://www.jiskha.com/display.cgi?id=1251172915