The excess charge on a small conducting body can be completely removed by grounding it. This involves connecting the body to the ground with a conducting wire. The electrons on the body will then be able to flow through the wire and into the ground, where they will be neutralized.

This process is often used in electronics to discharge capacitors and other components that may be holding excess charge. It is important to note that grounding a conducting body will only remove the excess charge; it will not change the body's overall charge. For example, if a conducting body has a net positive charge, grounding it will not make it become negatively charged. Instead, it will simply reduce the positive charge by an amount equal to the excess charge that was removed.