A charge of +3.1 × 10-16 coulombs is moved between two points, resulting in a potential difference of +15 volts. What is the magnitude of the work done on that charge?
2.3 × 10-15 joules
4.7 × 10-15 joules
3.1 × 10-15 joules
9.2 × 10-15 joules
2.3 × 10-15 joules
4.7 × 10-15 joules
3.1 × 10-15 joules
9.2 × 10-15 joules