THE REFERENCE DIRECTION FOR CURRENTS IS IRRELEVANT
USING THE LEFT-RIGHT
REFERENCE DIRECTION
THE VOLTAGE DROP ACROSS THE RESISTOR MUST
HAVE THE POLARITY SHOWN
IF THE CURRENT REFERENCE DIRECTION IS
REVERSED ...
THE PASSIVE SIGN CONVENTION WILL ASSIGN
THE REVERSE REFERENCE POLARITY TO THE
VOLTAGE ACROSS THE RESISTOR
PASSIVE SIGN CONVENTION RULES!