Example: Work and Electric Potential Energy
As shown in Figure a, a charge 𝑞1 = 2. 00 𝜇𝐶 is located at the origin and a
charge 𝑞2 = −6. 00 𝜇𝐶 is located at (0, 3. 00) 𝑚.
(A)
Find the total electric potential due to these charges at the point P,
whose coordinates are (4.00, 0) m.
(B)
Find the change in potential energy of the system of two charges plus a
third charge 𝑞3 = 3. 00 𝜇𝐶 as the latter charge moves from infinity to point
P.