Excess electrons on a lead sphere refer to the presence of additional electrons on the surface of a lead sphere, which is typically a result of the sphere being negatively charged.
Excess electrons on a lead sphere can cause it to have a negative charge and can also affect its electrical and magnetic properties.
The excess electrons on a lead sphere can be caused by friction, contact with another charged object, or exposure to a negatively charged environment.
Excess electrons on a lead sphere do not pose any immediate danger. However, they can potentially cause electrical shocks or interfere with sensitive electronic equipment if not properly managed.
Excess electrons can be removed from a lead sphere by grounding it, which involves connecting it to a conductive surface or object that can absorb the excess charge.