What is the absolute potential (in kilovolts or millivolts) 10 meters away from a point charge of 20 mC (m = 10-6)     18 kV     1.8 kV     3.6 mV     0.36 mV

An electrostatic paint sprayer has a 0.25 m diameter metal sphere at a potential of 25.0 kV with respect to the ground that repels paint droplets onto a grounded object.    Part (a)  What charge is on the sphere, in coulombs?  Q =   Part (b)  What charge, in coulombs, must a 0.12 mg drop of paint have in order to arrive at the object with a speed of 10.0 m/s, starting from rest?  q =

The potential at the center of a square is 6V when a charge of +Q is located at one of the square’s corners.  What is the potential at the center of the square when a second charge of -Q charge is placed at one of the remaining corners?

Two point charges, 3.81 uC and -4.04 uC are separated by 5.0 m. Find the electronic potential midway between them.