In the figure short sections of two very long parallel lines of charge are shown, fixed in place, separated by L = 14.0 cm. The uniform linear charge densities are +9.1 μC/m for line 1 and -4.5 μC/m for line 2. Where along the x axis shown is the net electric field from the two lines zero?

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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.