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lo Edit View History People Window Help 33% D Vied 208 PM a MyPret Home C Secure math.pitt 184/HW2/P2 2tptt%2f1e267 10bfa0 dual W Nadeem (Student section: 11433) 2181-PHYS 0175 Basic Physics for Sclence and Engineering 2, CRN 11432 l Messages Courses Help Logout Course Contents .. Online HW 02 » Polygon of charges sider a regular polygon with 14 vertices and with a charge of q-2.37 nC placed in each vertex. Let a coordinate frame in the plane of the polygon be Gefned with the ongin at the center af the polygon and the x-axis pointing towards a charge in vertex A of the polygon. The distance from the center to any vertex of the polygon is r1.11 cm t is the magnitude of the electric field at the center of the polygon? 0.00 N/C u are correct Timer Notes á Ewaluateu.eedback-mntinfe ur recelpt no. Is 159-463Preious Tries t is the x component of the electric field at the center of the polygon after removing the charge at vertex A on the x axis? -1731 NC the bmit Arewer Post Discussion Send Feedback
Explanation / Answer
when vertex A is removed then field due all the 12 charges will cancel out except the charge that is placed on the opposite corner.
so net field will equal to the field due to charge present on x = - 1.11 cm.
E = - k q / r^2
E = - (9 x 10^9) (2.37 x 10^-9) / (0.0111^2)
E = - 1.73 x 10^5 N/C ..........Ans
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