Question: 1) The potential energy of a 3.5 pC charge separated by 6.2 cm from a 1.6 µC charge is a.1.3 × 10-7 J b.8.1 × 10-7 J. c.1.2 × 10-5 J d.8.1 × 10-5 J. e. 1.0 × 10-5 J.
2) Three 1.0 µC charges are placed along the x-axis, one charge at x = -10 cm, another at the origin, and the last one at x = 10 cm. What is the total potential energy of this arrangement?