(a) What are 'magnetic field lines'? How is the direction of a magnetic field at a point determined? (b) Draw two field lines around a bar magnet along its length on its two sides and mark the field directions on them by arrow marks.
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They represent the direction a small north magnetic pole would take if placed at any point along the line. ** Show more…
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According to Gauss's Law for Magnetic Fields, all magnetic field lines form a complete loop. Therefore, the direction of the magnetic field $\vec{B}$ points from $\quad$ pole to $\longrightarrow$ pole outside of an ordinary bar magnet and from pole to pole inside the magnet. a) north, south, north, south c) south, north, south, north b) north, south, south, north d) south, north, north, south
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