Question

A charge q ₁ is placed on the y-axis at y = 4.0 m and the resulting potential at the position (3.0 m, 4.0 m) is 3.0 V. The charge q ₁ is removed and a charge q ₂ is placed on the x-axis at x = 3.0 m and the resulting potential at the position (3.0 m, 4.0 m) is 4.0 V. If both charges are in place simultaneously, what is the potential at (3.0 m, 4.0 m)?

1 V
3.5 V
5.0 V
7.0 V
12 V

Answer 1