 
 <translate> The important part for answering this question is: Charge conservation was first proposed by British scientist William Watson in 1746 and American statesman and scientist Benjamin Franklin in 1747, although the first convincing proof was given by Michael Faraday in 1843. So the final answer is first proposed by British scientist William Watson in 1746 and American statesman and scientist Benjamin Franklin in 1747 , although the first convincing proof was given by Michael Faraday in 1843. <ibo> Ihe dị mkpa iji zaa ajụjụ a bụ: Ọ bụ ọkà mmụta sayensị bụ́ onye Britain bụ́ William Watson bu ụzọ kwuo banyere idebe ụgwọ n'afọ 1746 nakwa onye America bụ́ onye ọchịchị na ọkà mmụta sayensị bụ́ Benjamin Franklin n'afọ 1747, ọ bụ ezie na ọ bụ Michael Faraday nyere ihe àmà mbụ doro anya na nke a bụ eziokwu n'afọ 1843. N'ihi ya, ọ bụ onye sayensị bụ́ onye Briten bụ́ William Watson kwuru azịza ya nke ikpeazụ n'afọ 1746, ọ bụkwa Benjamin Franklin, onye Amerịka bụ́ ọkà mmụta sayensị na onye ọchịchị, kwuru ya n'afọ 1747, ọ bụ ezie na ọ bụ Michael Faraday kwuru nke mbụ n'afọ 1843. 