6.(5pts) A total charge Q is distributed uniformly over a ring of radius R. We found an expression for the value of the electric field on the axis of the ring, E(x), a distance x from the center of the disk. E(x) = 1 Ox 4o (x + R )/2 Use this result, the above picture, and your imagination to construct the correct expression for the electric field on the axis shown above which is the vector sum of the electric fields arising from ring, each with total charge +Q, located at distances x = Land x = -L as shown below. (Hint: You do not need calculus here. You just have to remember the superposition principle of electric fields; ETotal = ERING1 + ERING2 and the fact that for a single ring the field E = 0 at its center). +0 +Q x=0 x=-L x=0 x= +L