Two charged particles, Q₁ = -83 nC, and Q₂ = 77 nC, are located a distance, L = 39 cm, apart as shown in the figure. (a) Find the electric potential at point, P, which is a distance, d = 13 cm, from charge #2? Vp = V When a third charge, Q3, is placed a distance, d = 13 cm, from point P as shown, the electric potential at point P is 0 V. (b) What then is the mystery charge, Q3? Q3 1 nC 1 3 P d P -d-2 -d- 2

Three charged balls, with charges of +q, -3q, and +2q, are placed at the corners of a square that measures L = 80.0 cm on each side, as shown in the figure. The value of q is 2.90 × 10-6 C. Assume that the potential an infinite distance from the charges is zero. +q -39 +2q Enter a number. L (a) What is the electric potential at the lower left corner of the square, due to the three charges? V ..(b)..What is the electric potential at the center of the square, due to the three charges? X V

A point charge with charge +55.6 nC is at coordinates x = 2.00 m and y = 0.00 m. What is the electric potential at the point (3.00 m, 3.00 m)? A point charge with charge -55.6 nC is at coordinates x = 0.00 m and y = 2.00 m. What is the electric potential at the point (3.00 m, 3.00 m)?

The two charges in the figure below are separated by d = 3.50 cm. (Let q, = -14.5 nC and q, = 29.5 nC.) К60.0° В d 92 (a) Find the electric potential at point A. kV (b) Find the electric potential at point B, which is halfway between the charges. kV