It takes 10 J of work to push a charge initially at rest into an electric field.If the charge is then released,it flies back to its initial position with a kinetic energy of
A)zero.
B)5 J.
C)10 J.
D)more than 10 J.
E)need more information.

Question

Quizplus · Accepted Answer

When the charge is released and returns to its initial position, it converts all the work done on it (10 J) into kinetic energy, resulting in 10 J of kinetic energy. This is due to the conservation of energy principle.

It Takes 10 J of Work to Push a Charge