Capacitance from sinusoid voltage

Hi everyone!

For modeling I am using 3D Comsol Multiphysics // AC/DC module // Quasi Statics, electric // time harmonic analysis.
In postprocessing Comsol calculates and plots electric potential and some other predefined quantities at different time steps .
Electric potential in boundary condition is sine wave: 0.5*sin(2*pi*f*t[1/s])

Now, is it possible to calculate capacitance in those steps from electric potential?

Thanks for your reply