3. Suppose you have a fixed charge of -15.0 nC at point X. Points A and B are at distances of 20.0 cm and 40.0 cm from X as shown. -15.0 nC A В Calculate the following: the potential at points A and B а. b. the potential difference between A and B the potential energy of a proton at A and B С.

34. I need help with these questions. The question reads: A uniform electric field has magnitude 240 N/C and is directed to the right. A particle with charge +4.2 nC moves along the straight line from a to b. a) what is the electric force that acts on the particle? B) what is the work done on the particle by the electric field? C) what is the potential difference Va-Vb between points a and b?

21. Two metal plates are charged and are measured to have a potential difference of 15.0 V. An electron is placed near the negative plate and released. What is the kinetic energy of the electron when it reaches the positive plate? a. 24.0 x 10¹ b. 9.9 x 10-¹9 1.0 x 10-¹9 J 13.4 x 10-19 j c. d.

1. A negative test charge -do is located relative to positive charges 91 and q2 as shown in figure. Find the electrostatic potential energy of go. H (+ -90 91 + 92

A -15 nC charge and a 9 nC charge are located on the x-axis at x=-6 cm and x=9 cm respectively. iii.How far to the left of the -15nC charge does the electric potential equal -27V?   iv.What is the magnitude (in N/C) of the electric field at this location?

Consider a charge of -2.0 mC between two charged parallel plates as shown below. What will be the change in the potential energy (AU) of this charge when it is moved from point B to point A if the potential difference AV (=Vg-Vg) is +1000 V? А. -2.0J B. +2.0 J C. -2000 J А В D. +2000 J Е. ОJ + + + + +