a. Based on your previous experience with field lines (e.g. electric field lines): . How should the direction of the magnetic field at every point be related to the magnetic field lines? . How should the strength of the magnetic field at every point be reflected in the magnetic field lines? (Note we are discussing field lines, not field vectors.) b. From the following four diagrams, please identify which one correctly describes the magnetic field lines for a bar magnet, explaining your choice vs. the others. ii. jii. iv