A charged rod is curved so that it is part of a circle of radius R (see figure below). The excess positive charge Q is uniformly distributed on the rod. Find an expression for the electric field at point A in the plane of the curved rod in terms of the parameters given in the figure. (Use any variable or symbol stated above along with the following as necessary: k and ø.) magnitude E = direction ---Select--- R A

A charged rod is curved so that it is part of a circle of radius R (see figure below). The excess positive charge Q is uniformly distributed on the rod. Find an expression for the electric field at point A in the plane of the curved rod in terms of the parameters given in the figure. (Use any variable or symbol stated above along with the following as necessary: k and ø.) magnitude E = direction ---Select--- R A