PHY 101 Lecture Notes - Lecture 12: Right-Hand Rule, Electric Field, Magnetic Braking
Document Summary
An electric field builds up in a conductor moving through a magnetic field -- reaches maximum strength when the force due to the electric field exactly balances the magnetic force. A voltage that is induced across the rod -- only when the rod is moving across the area. Faradays law: the magnitude of the induced emf is a loop/coil is equal to the rate of change of magnitude . Clicker question: the bar magnet is pushed toward the center of a wire loop. In bar magnets there is a current that leaves north poles and enters into south poles. Thinking about the flux of field lines etc. A long straight wire carrying a steady current is in the plane of a circular loop of wire. The closer you get to the wire the stronger the magnetic field gets. As it is moving, it is moving from a region of small magnetic field into one of larger magnetic field.
