Three charged particles are arranged on corners of a square as shown in Figure shown below, with charge -Q on both the particle at the upper left corner and the particle at the lower right corner, and charge +20 on the particle at the lower left corner. What is the direction of the electric field at the upper right corner, which is a point in empty space? (b) +2Q

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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.