AP Physics 2 Magnetic Field Problem

1 Mark for Review The figure shows magnetic field lines around two horizontal bar magnets that are next to each other in a row. Magnetic field lines run from the right end of the left bar to the left end of the right bar. Magnetic field lines also curve around each bar, above and below, from its left end to its right end. Other magnetic field lines move away from the right end of the right bar and loop around both bars and run into the left end of the left bar. Two identical bar magnets are brought close together. The magnetic field lines of the two magnets are shown in the figure. A student claims that the poles of the magnets are aligned north pole to north pole. Which of the following correctly states whether the student’s claim is correct and provides a correct justification? Yes, because the magnetic field lines point away from the north poles. Yes, because the magnetic field lines point away from the north poles. - no response given Yes, because the magnets attract one another. Yes, because the magnets attract one another. - no response given No, because the magnets repel one another. No, because the magnets repel one another. - no response given No, because between the magnets the field lines point away from one magnet and toward the other. No, because between the magnets the field lines point away from one magnet and toward the other. - correct Correct D Correct. The vector field map indicates that the bar magnets are aligned north pole to south pole (the lines starting at the right end of the left magnet end up on the left end of the right magnet). Thus, the field lines illustrate a force of attraction.