At the pure inductive stage, the maximum voltage or \( e_{\text{max}} \) can be determined by the equation:
\[
e_{\text{max}} = I_{\text{max}} \times X_L
\]
where \( I_{\text{max}} \) is the maximum current flowing through the inductor and \( X_L \) is the inductive reactance.
Inductive reactance \( X_L \) is calculated using the formula:
\[
X_L = 2\pi f L
\]
where \( f \) is the frequency of the alternating current (AC) signal and \( L \) is the inductance of the inductor.
To find \( e_{\text{max}} \), you would need to know the values of \( I_{\text{max}} \), \( f \), and \( L \) for the specific circuit or scenario in question. Once you have those values, you can substitute them into the equations to calculate the maximum voltage or \( e_{\text{max}} \) at the pure inductive stage.