I understand that superconductors have zero resistance, but with zero resistance there should be no voltage right? because V=IR

Also, why do diodes have such high resistance but no voltage in the backward bias. Shouldn't be proportional because again V=IR?



closed as too broad by Jon Custer, ZeroTheHero, Yashas, Kyle Kanos, FraSchelle May 3 '17 at 15:57

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.