Thanks! I realized i made that mistake right after posting my question! The characters in my textbook were real tight! ;) Thanks also for the advice of understanding formulas rather than memorize them! Though that's what i usually do, it's always good to have someone remind you! ;)
Homework Statement
A ring having a 10cm radius has a positive uniform density charge of 119,37 uC/m. Determine the electric field on the ring's axis at 5cm from the center of the ring.
Homework Equations
I used the equation E=2pi kad sigma/(a^2+ d^2)^(3/2). My question is related to...