Hey guys 
Im trying to derive Ampere's Circuital Law from current density J using Stokes Theorem.
This is what I have so far.
I understand I'm missing some steps in my working
I'm also confused as to what I'm integrating with respect to... It seem everywhere I look, someone has a different formula for J.
What am I missing?
thanks guys
Im trying to derive Ampere's Circuital Law from current density J using Stokes Theorem.
This is what I have so far.

I understand I'm missing some steps in my working
I'm also confused as to what I'm integrating with respect to... It seem everywhere I look, someone has a different formula for J.
What am I missing?
thanks guys