Charges experience an electric field and move accordingly.
In a typical metal, each atom in the lattice will allow one of its electrons to move freely. So the metal can be thought of as a rigid lattice of positively-charged ion cores surrounded by a swarm of free electrons. Later in the semester we will see how the Hall effect demonstated that electrons are in fact the free charge carriers in simple metals. NO, on average they reach a terminal speed, much as a skydiver reaches a terminal velocity of about 120 mph falling through air, a viscous medium. Many conductors are referred to simply as resistors.