(4%) Problem 19: A ring of radius R = 3 cm lies in the y-z plane and is centered at the origin. The ring carries a uniform charge Q = 31 C. A point P is located along the x-axis a distance x = 2.4 cm from the origin. z-axis Xx-axis y-axis R P 25% Part (a) Write an equation for the electric potential at point P due to the charge on the ring. Give your answers in terms of Q, R, x, and the Coulomb constant, k. VkQ(x+R) Correct! 25% Part (b) Calculate the electric potential, in volts, at the point P. V=8.14*10-3 V = 0.008140 * Attempts Remain 25% Part (c) Using your equation for the electric potential as a function of x, derive an equation for the electric field along the positive x-axis. Give your answer in terms of the variables Q, R, x, and the constant k. EkQx/(R + x2)3/2 Correct! 25% Part (d) Calculate the magnitude of the electric field at the point P in units of meganewtons per coulomb (MN/C) E=| Grade Summary Deductions Potential 0% 100%