Two short non-conducting rods of lengths L and 2L are aligned on the y-axis as shown below. The lower rod (-L < y < 0) has a negative linear charge density of -A. The upper rod (0 < y < 2L) has a positive linear charge density of +A. The magnitudes of the linear charge densities are the same such that -A = - (+1) Find the potential V for a point located on the x-axis at x = a due to the presence of both charged rods. Assume V = 0 at infinity. (Hint: Partial symmetry can be used to simplify the problem). +2L (0, 0) -L V-y

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.