How comfortable are you with in solving this Circuit. Top rail has a voltage of 5v and assume bottom power rail is voltage Vx. Ra is leftmost resistor, and 330 ohms is second resistor, and 5 ohms is blue resistor. Also assume 8 amps of current are flowing from the 5-volt voltage source and there is 4 amps of current flowing through the 5-ohm resistor/ Blue resistor.