Section 2.2 Voltage Source Symbols
In the following section, we will analyze our first circuit. Before we analyze this circuit, let’s first take a moment to discuss a notation convention. It is popular convention to label batteries or voltage supplies with the symbol \(V\) with an identifying subscript as we have with the symbol \(V_b\) in the next section. Using this convention, one might hypothetically say \(V_b=9\)V even though what is really meant is that \(\Delta V=9\) Volts across the battery terminals. Though this notation may require a small bit of additional care of the reader, we will use this popular convention of labeling batteries and voltage sources with a \(V\) rather than \(\Delta V\text{.}\) When discussing voltage changes across any other type of circuit element, we will return to the \(\Delta V\) notation.
