im working with electromagnets using DC only.

I want to start using AC from the wall outlet.

What do i need to know about AC when using and working with electromagnetic fields?

What are the differences i need to be aware of?

 

More energy and much bigger sparks!

 

With AC the current is limited to the inductive reactance which includes any metalic attracted item, also as a rule some method has to be used to prevent drop out of any attracted object due to the AC transition through zero.
One method is a single turn copper shading coil.
Max.

 

The rectified AC current will, of course, drop to zero every half cycle.

But if you connect a reversed diode across your electromagnet, the inductance will cause the current to continue to flow through the coil and this diode during this time. Therefore the magnetic field will be fairly constant. No buzzing!

Are we allowed to recommend using mains voltages? Thought there was a rule against this.

 

As I have always said, modern science needs exceptions to the rules.

 

Due to the OP refusing to take and follow other suggestions or to do any research on his "electromagnetics" threads, I predict a 'Darwin Award' in his near future. Especially since he is moving on to mains voltages.