Answer to Question #248638 in Electricity and Magnetism for Mosses07

Question

Electrostatic work W is done on a charged particle as the particle travels from point A to point B in an electric field. You then apply a force to move the particle back to A, increasing its kinetic energy by an amount equal to 2W.

How much work did you do?

Express your answer in terms of W.

Answer 1

The work I did is 2W because, according to work-energy theorem, the work done by me on the object is equal to the change in the object's kinetic energy.