are u going to answer the questions?
if yes, then here--
what are the Kirchoff's laws of nodes and loops and why is the Kirchoff's sign convention necessary to use these laws?
i think there's no specific sign convention in kirchoff's laws
if you get the answer in negative,u just took the opposite direction of current
dude my sir told the same thing wow
never heard about casimir effect...
Casimir effect - Wikipedia