Astraight, nonconducting plastic wire 9.50 cm long carries a charge density of 130 nc/m distributed uniformly along its length. it is lying on a horizontal tabletop. a) find the magnitude and direction of the electric field this wire produces at a point 4.50 cm directly above its midpoint. b)if the wire is now bent into a circle lying flat on the table, find the magnitude and direction of the electric field it produces at a point 4.50 cm directly above its center.
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