An electrostatic paint sprayer has a 0.17 m-diameter metal sphere at a potential of 25.0 kV that repels charged paint droplets onto the object to be painted, which is grounded (electric potential of 0).

Explanation:

From the question we are told that:

Diameter

Radius

Potential

Generally the equation for Potential on spere is mathematically given by

Therefore

Where

Therefore

1= 26.17

2= 1.17

3=30.86

4=5.86

just took the assigment on edge

elctricity and magnet is conversion to it