o = 8.85 x 10-12 _cz 1 = 9x 109 Nm2 Nm2 ' ATCEO C2 IF = AREO 12i = - 1 q . 1 2qd AnEor2 - dipole = or L qd. e = 1.6 x 10-19 c ATTE0 73 4TEQ 73' 4. (20) Consider a line of charge of length L that lies on the y-axis symmetric about the origin. The net charge of the line is zero. The portion of the line that is along the positive y-axis is positive and the portion that is below the y-axis is negative. A) Draw a picture of this situation. B) What is the direction of the electric field at a location x, along the x-axis? Explain. C) Write out the integral relation that determines the magnitude of the electric field at this location