Modeling Magnetic field of toroid

Hi -

I am new to COMSOL and want to quantify the magnetic and electric field in the gap of a toroid.

I would like to model a toroid with a gap in it and a wire coiled around the toroid. Then I would like to apply an AC and DC current to that wire and visualize the field in the gap and quantity the strength.

Any help is greatly appreciated on how to get started.

Thank you.