Homework Statement
Consider the specific case of a point above the axis of a circular ring of charge, how do the calculations follow to cancel the radial components? I understand the concept of the symmetry but don't understand how to express it in the expression without just removing the term...
Could someone help me understand how the symmetry is expressed mathematically? I completely understand the symmetry of the situation conceptually but cannot see how to show it mathematically, I have reduced the electric field vector into its radial and axial components as in the following...
Homework Statement
Problem 2.4 from Griffiths Intro to Electro[/B]
Find the electric field a height z above the centre of a square loop with sides a and linear charge density λ.
height is given to be z and sides given to be a, ∴ distance from origin to side is given by a/2
Homework Equations...