uniform electric field of magnitude 200 V/m is directed in the positive x direction A +10 oye charge moves from the origin to the point (x, y) = (20.0cm 50.0cm) What is the change in the potential energy of the change fiel system 5) Through what potential difference does the Charge move?

In the diagram below particle a has a charge of 650 uc and is ATM away from point P particle B has a charge of -380 uc The distance between ANB is 15 M determine pEe between A and B as well as the potential at P

Last Revised 12/21/2015 Equipotential Surfaces – 3.2 4) How much work would you have to do to move a 7nC charge along the dashed line path from point P1 to point P2 in figure 1? E Figure 1: Notice that the angle o is the angle between the path taken and the electric field vector. a) Take the electric field shown below to have a constant value of 1500V/m, the distance between P1 and P2 to be 3.00cm, and the angle 0 to be 40° . Show your work. b) What would be the value if the charged moved was a -7nC charge instead? Explain what this answer means in terms of the work being done. Last Revised 12/21/2015 Equipotential Surfaces – 3.3

Imagine a flat horizontal surface that is an equipotential surface of an electric potential. The magnitude of the electric field at the surface is E. By how much would the potential of a charge q change of it is moved along the surface a distance s? A)0 B)2Es C)E/s D)Es E)none of the above

A force of 4.30x10^-2 N is needed to move a charge of 56.0 µC a distance of 20.0cm in the direction of a uniform electric field. What is the potential difference that will provide this force? a) -123 Vb) -154 Vc) -165 Vd) -220V e) none of the above