The figure below shows two lines of charge in cross-section coming out of the page. Each line of charge has a linear charge density of ±1.70 nC/cm and they are separated by a distance d = 23.4 cm. What is the magnitude of the electric field at the dot, a point y = 6.30 cm above the midpoint between the lines?

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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.