a current of 2A is flowing from a to b.
what is the potential difference between the points?
hopefully my diagram makes sense.
this is a really simple question and i cant answer it because im not understanding the whole concept.
Does current (or anything) stay constant in a cicuit??
do i follow the current round/thru circuit and do calcs along the way?
so voltage after 3ohm-R = IR = 6V
so 6V into 20V battery. now im stuck. it goes into neg term first so is that -20V?? please help somene! thanks