A charge q that moves between two points A and B, and has an electric force acti

Question

A charge q that moves between two points A and B, and has an electric force acting on it ( and perhaps several other forces) has work W done on it by the electric force. The electrostatic force is conservative and so we can define a change in electric potential energy, deta U = -W . We defined electric field using the relation F=qE, and in a similar way we define Electric Potential commonly called Voltage as delta V = W/q = (delta U)/q


A ball has mass 3.0 µg and charge -3 nC moves from point A to point B. It has the same speed at points A and B, and the work done by the electric field during the move is -1.9 mJ.
(a) What is the change in electric potential energy of the ball? 1

(b) What is the change in voltage between points A and B? 2

(c) At which point does the ball have a higher electric potential energy? 3 ---Select--- Point A Point B They have the same voltage There is not enough information

(d) Which point has the higher voltage? 4 ---Select--- Point A Point B They have the same voltage There is not enough information

(e) Has the kinetic energy of the ball changed? 5 ---Select--- No Yes Not enough information to tell

Explanation / Answer

Sorry I figured it out

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