Please only answer if you explain the conceptual reasoning. Thanks in advance. I
ID: 1585176 • Letter: P
Question
Please only answer if you explain the conceptual reasoning. Thanks in advance.
In the figure below, two charge particles each with a charge of +q are fixed in place on the x axis. They are the same distance from the origin. Three points along the y axis are labeled A, B, and C. B is at the origin and points A and C are the same distance from the origin.
a. Rank each point according to the magnitude of the net electric field, greatest to least.
b. Rank each point according to the net electric potential, greatest to least. Problem 2, cont.
c. Suppose a negative charge q3 = -q is fired from point B in the +y direction. As q3 moves in the +y direction, does the electric force do positive or negative work? Explain your reasoning.
d. Does the electric potential energy of the system increase, decrease, or stay the same as q3 moves in the +y direction? Explain your reasoning.
Explanation / Answer
a) EC = EA > EB = 0
b) VB > VA = VC
c) the field on +y axis is in +y direction & -q is moving in +y direction => field and -ve charge in same direction => negative work
d) as negative charge is moving away from positive charge => energy will increase
e) as potential energy is increasing => kinetic energy will decrease => velocity will decrease