A semi-circular wire containing a total charge Q which is uniformly distribute over the wire in the x-y plane. the semi-circle has a radius a and the origin is the center of the circle.
Now I want to calculate the electric field at a point located on at distance h on the z-axis. What is the magnitude of this electric field, and is this field only in the z direction?
The Attempt at a Solution
dEz=dE cosθ = dQ/(4πε√(h^2+a^2))(h/(√(h^2+a^2))