Question

The potential energy of a charge q moving from A to B at point A is 5.4 × 10^-10 joules and at point B is 2.3 × 10^-10 joules. The charge is 2.5 × 10^-15 coulombs. What potential difference does the particle undergo?

A. 1.2 × 10^3 volts
B. 2.3 × 10^3 volts
C. 2.5 × 10^4 volts
D. 5.4 × 10^4 volts
E. 7.0 × 10^4 volts

Answer 1

\[V = \frac{U}{q}\]
so if you want the change in potential difference.... you have
\[\Delta V = \frac{\Delta U}{q} = \frac{U_{b} - U_{a}}{q} = \]

Answer 2

You can do the rest!

Answer 3

whats the U & Q stand for ?