Assuming a current is flowing, what increases the strength of the magnetic field of a coiled electrical wire? straightening the wire
changing the direction of the current flow
adding more coils to the wire
stopping the current

During cooling, the kinetic energy of the molecules falls. why does this happen? a.the motion of the molecules increases. b. the motion of the molecules slows down. c.the van der waals forces between molecules decrease d. the forces of attraction between the molecules are overcome.