Two positive charges each of charge q are fixed on the y -axis, one at y = d and the other at y = − d as in Figure P16.66. A third positive charge 2q located on the x -axis at x = 2d is released from rest. Find symbolic expressions for (a) the total electric potential due to the first two charges at the location of the charge 2q, (b) the electric potential energy of the charge 2 q , (c) the kinetic energy of the charge 2q after it has moved infinitely far from the other charges, and (d) the speed of the charge 2q after it has moved infinitely far from the other charges if its mass is m.

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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.