A force does 25 µJ of work moving a point charge of 5 µC against a potential difference What is the potential difference? Select one: O a. 0.20 V O b. 25 V О с. 125 V O d. 5.0 V О е. 20 V

A 5.5 μC charge moves 6.0 m from point A  and 8.0 m to point B. Determine the potential at point A and point B.

What are the sign and magnitude of a point charge that produces a potential of −49400 V at a distance of 4.55 mm?

1. An eletrostatic paint sprayer consists of a charged metal sphere. Charged paint droplets (the sign the same as the metal sphere) are shot towards the metal sphere using a paint gun. The paint droplets repel and move towards a grounded object that needs to be painted. In the figure below, an electrostatic paint sprayer has a 0.2 m diameter metal sphere at a potential V sphere of 20 kV that repels paint droplets onto a grounded wall. Vwall = 0 (a) What charge is on the sphere? Qsphere C = 0 9 drop X paint drop repelled to the wall Vsphere 5.4-10-11 C (b) What charge must a 0.06 mg drop of paint have to arrive at the object with a speed of 6 m S Electrostatic Paint Sprayer