Question

why does a charged object lose its charge when touched​

Answer 1

Answer:

Any charged object has excess of either electrons (if negatively charged) or protons (if positively charged). When we touch such an object, the extra charges tries to flow through our body to the ground or the earth. This happens because the earth is deficient in charges as compared to the charged object.

Answer 2

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When we touch a charged body, the excess of accumulated charge or static charges on it, gets transfer to ground through our body. Our body acts as a path to it. Thus the charged body loses its charge and hence turns neutral.