In the figure set V=0 at infinity and let the particles have charges q1= +q= -3.60 *10^-5 C and q2= -6q. They are separated by d=45 cm, with q1 located at the origin. Locate any points on the x axis at which the net potential due to the two particles in zero. What is the positive position? What is a negative position?

What is the net electric potential at point P due to the four particles if V = 0 at infinity, q = 7.00 fC, and d = 4.00 cm? +q +q -9

Given two particles with Q = 2.30-µC charges as shown in the figure below and a particle with charge q = 1.24 ✕ 10−18 C at the origin. (Note: Assume a reference level of potential V = 0 at r = ∞.) Three positively charged particles lie along the x-axis of the x y coordinate plane. Charge q is at the origin. Charge Q is at (0.800 m, 0). Another charge Q is at (−0.800 m, 0). (a) What is the net force (in N) exerted by the two 2.30-µC charges on the charge q? (Enter the magnitude.)  N (b) What is the electric field (in N/C) at the origin due to the two 2.30-µC particles? (Enter the magnitude.)  N/C (c) What is the electrical potential (in kV) at the origin due to the two 2.30-µC particles?  kV (d) What If? What would be the change in electric potential energy (in J) of the system if the charge q were moved a distance d = 0.400 m closer to either of the 2.30-µC particles?

In the figure, three thin plastic rods form quarter-circles with a common center of curvature at the origin. The uniform charges on the three rods are Q = 30 nC, Q, = 3•Q1, and Q3 = 8.Qj. What is the net electric potential at the origin due to the rods? Give your answer in volt. (ke = 1/4ne, = 9.0 x 10° Nm²/C?) y (cm) 4.아 2.0 1.0 - x (cm) %3D