||||GGEE12=), and the net field (if there is any) should be along the yaxis, with magnitude equal to GEqdqdqdqdnetjj=−FHGIKJFHGIKJ14214124304232022ππεεbg±±which is seen to be zero. A rough sketch of the field lines is shown below: 10. We place the origin of our coordinate system at point Pand orient our yaxis in the direction of the q4= –12qcharge (passing through the q3= +3qcharge). The xaxis is perpendicular to the y
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