A point charge of 6nc is located at origion find the potentional potentional of point (0.2, -0.4, 0). (b) Two point changes of - Sne and 2ne are at (19/11) and (-1,0, -1) find the potentional at (0.51,-2) V = 3/²0²2 - 30'z Determine E and I at located (0) if 1 2¹ (3,7/6, 2) = {2/6 is the angle in radian)