Adding Coils Around Human Head Model

What specific steps do I need to take to add coils around my mesh and visualize the resulting magnetic fields on the head?

Here is the link for the project file since it was too large to attach.

https://drive.google.com/open?id=1KM6z1B2CDx1hB2ThuXXPURJFvpNNLOtU

Thank you.