A tiny sphere of mass 8.00 μg and charge −2.80 nC is initially at a distance of 1.60 mm from a fixed charge of +8.50 nC. If the 8.00-μg sphere is released from rest, find (a) its kinetic energy when it is 0.500 μm from the fixed charge and (b) its speed when it is 0.500 μm from the fixed charge.

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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.