Two -1 C charges are separated by a distance d giving them some electric potential energy. Next they are placed at equal distances from an unknown charge as shown. How does the total potential energy of thi new collection of charge change? -1 C -1C O It increases. It decreases. O It remains the same O It depends on the sign (polarity) of the top charge.

A point charge q1 = 4nC is placed at the origin, second point charge g2 = -3nC is placed on the x-axis at x = 20cm and a third charge q3 = 2nC is placed at x = 10cm. What is the potential energy of the system of three charges? O -360 nJ O 360 nJ 180 nJ O -180 nJ

6.) see photo for details

Calculate the electric potential at point B, and the total amount of potential energy stored in this system of charges.

A charge q is placed at the origin of the x-axis and another charge of charge -3.50 nC is placed 5.80 cm to its right. It is found that the electric potential due to the two charges is zero at x = 1.93 cm. What is q? The charge is:

1. Two point charges are located on the x-axis, q1 = -e at x = 0 and q2 = te at X a. (a.) Find the work that must be done by an external force to bring point charge q3 = +e 2a. [Hint: The work W equals the difference between (i) the potential 2a and (ii) the potential energy when it is %3D from infinity to x = energy U associated with q3 when it is at x =