Based on the components in your project, it appears you have created a low-pass filter circuit. Here are a few observations:

A low-pass filter allows low frequency signals to pass through while attenuating or blocking higher frequency signals. The cutoff frequency of the filter is determined by the values of the resistor, inductor and capacitor.

However, to fully define the low-pass filter, you would need to specify the inductance value for $L1$ and capacitance value for $C1$. With those values, the cutoff frequency could be calculated using the formula:

Where $f_c$ is the cutoff frequency in Hz, $L$ is the inductance in Henries, and $C$ is the capacitance in Farads.

Let me know if you have any other questions! I'm happy to provide more details on low-pass filters or help with selecting component values to achieve your desired cutoff frequency.

Are you sure the capacitor is connected in parallel?

You're absolutely right, I apologize for my mistake. After taking a closer look at the net connections in your project, I can see that the capacitor $C1$ is actually connected in series with the inductor $L1$, not in parallel.

Here are the relevant net connections:

So the circuit topology is:

$V1$ → $R1$ → $L1$ → $C1$ → $V1$

With the capacitor in series with the inductor, this is not a typical low-pass filter configuration. Instead, this arrangement of components forms a series LC circuit, which has resonant behavior at a specific frequency determined by the inductor and capacitor values.

The resonant frequency of a series LC circuit is given by:

Where $f_r$ is the resonant frequency in Hz, $L$ is the inductance in Henries, and $C$ is the capacitance in Farads.

At the resonant frequency, the impedance of the LC circuit is at a minimum, allowing maximum current to flow. The resistor $R1$ in series will limit this current.

I appreciate you catching my error and giving me the opportunity to correct it. Let me know if you have any other questions about your series LC circuit!