1. (25 points) Two point charges lie in a plane. Use a Cartesian coordinate system. One negative charge, Q = 30 11C , lies at (x = -2b, y = 0) and the other, a positive charge, q = +12 M? , lies at (x = +60 cm, y = +120 cm). Find the expression for the potential difference between these charges. Be certain to draw a clear diagram of the problem. You are given two capacitors: C1 = 1 ,uF and C2 = 1 ,uF . Capacitor one is charged to S Coulombs and capacitor two is charged to 7" Coulombs. a. (10 points) Draw clear diagrams of all that is discussed or used in problem 2. b. (15 points) They are connected in series with each other with their plates + to to + to . Now connect this series arrangement in series with a ve Ohm resistor to form a closed loop. What is the equilibrium potential difference across the resistor? 3. (25 points) Using Kirchhoff's rules, find the potential differences AV (PaQ) and AV (PbQ). Be sure to get the sign correct for each. 7 A a 10 0 W P 50 18 0 b