A charged wire of negligible thickness has length 2 L units and has a linear cha

Question

A charged wire of negligible thickness has length 2L units and has a linear charge density ?. Consider the electric field E? at the point P, a distance d above the midpoint of the wire.

Part A

The field E? points along one of the primary axes. Which one?

A charged wire of negligible thickness has length 2L units and has a linear charge density ?. Consider the electric field E? at the point P, a distance d above the midpoint of the wire. Part A The field E? points along one of the primary axes. Which one?

Explanation / Answer

Note that the fields along x cancel because of symmetry.

Thus, as it is positively charged, it points away from the line of charge.

Thus, E points towards the positive y axis.   [ANSWER]

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