What is the electric potential created 1.8 meters away from a point charge of .0035C (Estimate k as 9.00 × 10^9)?

Answer 1

The Formula for Electric Potential is

EP = k q / r and comes from Coulomb's Law F = k q1 q2 / r^2 [see below]

EP = 9e9 3.5e -3 / 1.8 = 17.5 e 6 volts

Electric Potential is = Potential Energy per unit charge

It is also

Electric Potential = Energy needed to move the charge r meters through an Electric Field = k q / r^2

Note that Voltage is the Difference in EP between to locations = Work done moving between the 2 locations

against the Force of the Electric Field.