More Anatomy of a Circuit

Before proceeding to Nodal Analysis let’s look at nodes, node voltages and how they relate to other circuit values.

Locating Non-reference Nodes

Tip

If you don’t need to cross a component between two of your labeled nodes than they are, in fact, one node.

Relating Circuit Values to Node Voltages

Component Voltages and Node Voltages

Try the following quiz questions to see if you can find the relationship between the component voltages and the node voltages \(V_A\), \(V_B\), and \(V_C\).

Component Currents and Node Voltages

Try the following quiz questions to see if you can find the relationship between the component currents and the node voltages \(V_A\), \(V_B\), and \(V_C\).

What happens if we reverse the direction of \(I_a\)?