Deriving an equation for the electric field at a point charge

[ashworcp]

Homework Statement

Use V=kq/r, E(x) = V/x, E(y) = V/y, E(z) = V/z to derive an expression for the electric field at a point charge q.

E(r) = ?

Homework Equations

E= F/Q

 

[Andrew Mason]

Use V=kq/r, E(x) = V/x, E(y) = V/y, E(z) = V/z to derive an expression for the electric field at a point charge q.

E= F/Q

If it is asking for the electric field of a point charge at the centre of this point, the answer is that it is undefined in classical electrodynamics. Quantum effects apply.

AM