[1] I'm curious to hear what people teach to explain *why* the inverse resistor combination formula works. I understand how parallel resistors affect total resistance and hence current, but I'm interested to learn how people understand why the math formula really works. I have a personal understanding that works for me, but what are any other views?
[2] This is a question of semantics: "Is there any such thing as a parallel circuit, singular?"
[2] This is a question of semantics: "Is there any such thing as a parallel circuit, singular?"