What do the flows and obstacles in rows 1 of the three tables suggest has happened to the ‘pressure difference’ across the rheostat? Explain why the data suggests this. What happens to the product for the rheostat (also on the first rows)?

the answer would most likely be c, because if it's a comical piece of information, it may likely not be true, if it's a site that allows anybody to edit the content, it could mean a five year old is typing the info, and if it's a tv show produced by a celeb, it may have a biased opinion.

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach