College Physics 10th Edition by Raymond Serway,Chris Vuille

Exercise 20

Two charges of 1.0 C and 22.0 C are 0.50 m apart at two vertices of an equilateral triangle as in Figure P16.60. (a) What is the electric potential due to the 1.0-mC charge at the third vertex, point P (b) What is the electric potential due to the 2.0- C charge at P (c) Find the total electric potential at P. (d) What is the work required to move a 3.0- C charge from infinity to P