- #1
mujadeo
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Homework Statement
a current of 2A is flowing from a to b.
what is the potential difference between the points?
______a______3ohm_____-20V+_____1ohm_______+6V-________b_____
hopefully my diagram makes sense.
Homework Equations
this is a really simple question and i can't answer it because I am 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 I am stuck. it goes into neg term first so is that -20V?? please help somene! thanks