Question

A. A point charge of +3.3 µC is located at the origin of a coordinate system and a second point charge of -0.7 µC is at x = 1.00 m. What is the electric potential at the x = 0.35m point? (ke = 8.99 · 109 N·m2/C2) (Show how you arrived at your result and include units)

B.

What is the equivalent capacitance of the combination shown?

Answer 1

Vnet = V1 + V2 ;

Vnet = k * 3.3 * 10^-6 / r1 + k * -0.7 * 10^-6 / r2

V net = k [ 3.3 * 10^-6 / 0.35 - 0.7 * 10^-6 / 0.65 ]

V net = [ 8.99 * 10⁹ ] [ 3.3 * 10^-6 / 0.35 - 0.7 * 10^-6 / 0.65 ]

V = 7.52 * 10⁴ V