PHY132H1 Final: PHY132H1 - Final
Document Summary
The charge separation creates an electric field in metal bar. In reality, electrons are what move, hence they move down. Magnetic force separate the charges, causing a potential difference between the ends of a conductor as well as creating an electric field of strength = For a conductor of length , the motional emf to magnetic field is = Change flow continues until the downward electric force& is large enough to balance upward magnetic force ". Net force then becomes 0 and charges will stop flowing. Give it a try: a metal bar moves through a magnetic field. Between and is 0 so " = 0. Also and b are parallel to each other, so no force on charges, and no charge distribution. If we slide a conducting wire along a u-shaped conducting rail, we ca complete a circuit and drive an electric current.
