Answer
2 Nodes
4 elements in parallel
0 elements in series
Work Step by Step
Recall, whereas all electrons go through all elements in series, electrons have the option of which element to go through in parallel. Consider the analogy of a road. If a car were driving through two elements in series, it would be like a road with no forks in it, meaning that the car would have to go through all elements. Contrarily, parallel elements are like a fork in the road, where the car has the option where to go. Considering this, we obtain that $\fbox{all four elements are in parallel}$, meaning that $\fbox{no elements are in series.}$ Now, we must find the number of nodes. Recall, a node is where there are two or more wires or circuit elements meet. (This can occur either where one path becomes multiple different paths or where multiple paths join into one path.) Using this, we find that there are $\fbox{two nodes}$.
