What is the difference between charged object and uncharged objects?

the difference between a charged body is an body that has either a surplus or deficiency of electrons, and is negatively and positively charged respectively. And the difference between an uncharged body is that it’s  a 'neutral' body that has an equal number of protons and electrons.

Explanation:

12000j is work done

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explanation:

there is no change in the electric potential energy as it is in rest on both conditions.