This question originates from a diode question in which we modelled diodes using the simple piece-wise linear model. According to the lecture notes, the diode acts as a battery after attaining Vf(forward bias voltage). This creates a seemingly paradoxical relation.
In the battery-equivalent circuit above, quick circuit analysis shows that if unknown= unknown1 = 6V, there should be 4A flowing upwards from the 5V source. However this is impossible in the diode circuit since no current can flow through the diode from - to +(In the model that we are using at least).
So this creates a very confusing situation, is there actually current flowing through the diode or not? If so, how can this be explained?
EDIT: So I understand that I made a wrong assumption which led to the inconsistency. However, a new question arises, if I had unknown = 10V, that reaches the minimum requirement to activate the diode, but KCL shows that no current flows through the diode. I'd like to know why this is? More specifically in terms of intuition, what makes the resistor path more prefered for the current to travel through?