Question

I had trouble understanding this, could you explain how after how the answer is gotten as well as the formulas utilized? Much will appreciated if could be done so. Thanks!

1) A r B r O Two charges, one at the origin, 0, with charge - Q, and the other at point B with charge +Q, where Q = 4.0 x 10°C, are separated from each other and from observation point A at a distance of r= 10 meters a) Find the electric field at point A. b) What is the potential at point A ?

Answer 1

E = - 311.77€ + 1803 - 360 som Y 1 to yoxlood Now polential V= kolo k + 8 9x108 (uxio) gxio Cuxio 10 - 9x10x10 (44) rom + -311-77 € + (180-360) È = -311772-180 10 Tom -311.77 NIC – uxlolc All arms of tringle is equal so internal angle is of 60' -0 volt 6 uxo E Eol = UTTE 103 o volt =9x10x4x106 N/C - 180 N/c IỀ 1 = √311.77341802 TE) = 3600/C Direction from – X-axis Arower of part A 360 N/C from positive X-axis at 210 degree Tui 100 - 360 NIC TTER 102 - 360 N/ Ele x 4x106 - fant 311.77) O=30 Эх 30 Zo = 360 (-sinboc+ costoj) "360/6

Thanks for asking.