A straight, nonconducting plastis wire 8.5 cm long carries a charge density of +175nC/m distribute uniformly along its lenght. It is lying on the horizontal tabletop.
A) Find the magnitude and direction of the electric field this wire produce at a point 6.00cm 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 point 6.00cm directly above its center.