Directions: Please place your cell phone in formula sheet, test, and calculator on it. Please show all your work for full credit. A correct answer with no work shown is worth no ports but an incorrect or partial answer with some work shown MAY be worth partial credit. 1. (20 points) In the figure, three long straight wires are perpendicular to the page with R = 15.0 cm and I1 = 3.14 A, I2 = 6.28 A, and 13 = 9.42 A. The current is into the page in wires 1 and 2 and out of the page in wire 3. (a) What are the magnitude and direction of the net magnetic field at point P due to the three wires? (b) What are the magnitude and direction of the magnetic force per meter of wire length on wire 1 from the other wires? (c) If an electron was shot horizontally to the right at point P with initial velocity v = (2.20 x 105 m/s)i, what are the magnitude and irection of the force it will experience at point P? = 0.15m P 11 a V s 2R - - - - - - - 12 R B