Although the vector nature of forces deems otherwise, the electrical attraction between two oppositely charged bodies can be negative force and the repulsion between them, positive force. Adoption of this convention is necessary in this problem. Two oppositely charged point masses of unknown magnitude have acquired a total charge of 120 μC. When they are brought to a distance of 40 cm from each other, each exerts an attractive force to the other in the order of 360 N. Determine the magnitude and nature of the charges present in each of the two point masses.

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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.