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(a)The linear charge density of the rod is, 4.24x10-5c 8.31x10m 5.10x104C/m (b)The charge on the small length dx is, The electric field at the point P due to the small lengthdx is, dk 4.24x10-1s 47(8.85x10")(0.142) (8.31x102 +0.142) 1.19x103N/C Here, negative sign indicates that the field is directed towards negative x axis the magnitude of the electric field produced at a point Pat a distance a from the rod is 1.198 10-3N/C. (c)The negative sign of the electric field at a point P due to the entire rod points indicates that the field is directed in the -x axis. That is 180 in the counter-clockwise direction
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