Questions #1: Will a nail be attracted to either pole of a magnet? Explain what is happening inside the nail when it is placed near the magnet. My answer: Yes, the nail will be attracted to either pole of a magnet because the nail is neutral and has no charge whatsoever. When a magnet is placed near a nail, the nail will polarize, meaning that the electrons will move farther or closer depending on what pole of the magnet is closer to it. -- Is this concept of magnetism exactly related to the polarization concept of electricty and charged particles? There is one thing I don't get, however. If magnets are similar to electrically charged particles (opposite poles attract and like poles repel), how do magnets attract neutral objects? Neutral objects have no poles but have atoms that have their charges balanced right? Do the magnets attract/repel the electrons? If so, is it because they exert a force on the neutral object because the electrons inside the neutral object are constantly orbiting (i.e. they have a velocity)? I know that in order for the magnetic field to exert a force on a charge, the charge needs to have a velocity. All electrons have a velocity in an atom correct? Why is it that magnets cannot attract non-metal/iron objects? If all objects contain atoms and therfore electrons, why is it that the magnet cannot attract the constantly moving electrons in its atoms? Question #2 How can a current loop be used to determine the presence of a magnetic field in a given region of space? My Answer: Well I know a couple of equation that might help me out: F=BIL, B=unI... but I'm not really understanding the concept behind this question. Please help me out here. Thanks in advance!