We define Electric Potential Energy as
- The potential to work gained by the charge as it moves from point a to point b.
- The negative work done on the charge by the electric force to move it from a to b.
Hence, the work done by an electric filed to move a charge from a point to another point in the filed
can be related to the electric potential and electric potential energy as following :
Potential energy: Ua Ub
Potential: Va = 0 V Vb = 200 V
Work done by an
electric filed to move
a charge q from a to b : - Wba= (Ub - Ua) = q(Vb - Va)
Question: According to the diagram, what will happen to the kinetic energy of an electron if it is released at point a and then moves to point b under the influence of the filed?
Increase
Decrease
Remains same