2.  successfully connected electricity and magnetism  aligned a straight wire with a compass pointing to Earth’s magnetic north  when current is present, the needle deflects perpendicular to the wire  when the current is reversed, the needle deflects in the opposite direction

3.  “a charge moving through a straight conductor produces a circular magnetic field around the conductor”

4.  to determine the direction of the magnetic field around a straight current-carrying conductor, use the right-hand rule:  if you hold a straight conductor in your right hand with your right thumb pointing in the direction of the conventional current, your curled fingers will point in the direction of the magnetic field lines  note: if you use the electron flow model instead, you must use your left hand

5.  a cross-section of the wire is often shown  the current can either go into the page (x) or out of the page (  )  this model is based on an arrow  the magnetic fields get farther apart as you move away from the wire to indicate that it is getting weaker

6.  led to new technologies like motors and generators  demonstrated using electricity to produce magnetism  can produce magnetic fields with properties that can be controlled:  can turn the magnetism on and off  can change the direction of the magnetic field  can change the strength of the magnetic field