Can electricity be converted into momentum?

en.wikipedia.org/wiki/Electric_motor

What's the method called?

Can a rocket be electric powered then too?

...

is this an EM drive

Photon drive? I don't know. You just shoot photons of some kind in one direction. I don't know what the most efficient generation of photons from electricity is, probably a laser.

Electeicity already has momentum, as it is basically electrons moving
But it's negligibke if you dont use the electromagnetism that exerts a much bigger force on other charged particles

Electrons moving? I thought electrons were stationary in an atom.

If you use a turbine and aerodynamic thrust then yes. But you will be fucked in space.

What's an electric engine???