If a resistance of $0 \Omega$ and $x$ (and $x>0$) are in parallel does all current pass through the $0$ resistance?
For instance in the following circuit:
Set variable resistor to o ohms:
I know that current takes the path of least resistance but surely some would still go through the $12$ ohm resistor?
I am asking why no current goes through the higher resistance. If the lower resistance was 1 (from the variable resistor) the current would go through the higher resistor, so why when the lower resistance is 0 does all the current go through it.