How to apply both voltage and current simultaneously to the cable?

Hi, everyone,

I build a model to study the magnetic field and electrical field of two cables. I have the voltage data and current data. But how can I apply both voltage and current simultaneously to the cable?

For example, in MF interface, we can use single turn to apply voltage but how to import correct and related-to-voltage current?

Thank you very much,
Have a good day,
Bin