Two charges q1= 2μC and q2=-4μC are fixed in their positions and seperated by a distance d=10 cm, look at figure below. Find the change in potential energy of the two charges when a third charge q3=6μC is brought to from ꝏ to P.

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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.