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Math Help - its magnetic..magnitism

  1. #1
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    its magnetic..magnitism

    Magnetism
    Which of the following statements about magnetism are correct:

    True False The positive direction of magnetic field lines outside a magnet is from the S pole to the N pole.
    True False Earth's North magnetic pole and North geographic pole are different.
    True False When a bar magnet is cut in half, one half becomes a N pole and the other half becomes a separate S pole.
    True False Like poles attract each other and unlike poles repel.
    True False Magnetic field lines always form closed loops.
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by lovinhockey26 View Post
    Magnetism
    Which of the following statements about magnetism are correct:

    True False The positive direction of magnetic field lines outside a magnet is from the S pole to the N pole.
    The field lines point in the direction of the force on a free N monopole
    if such exists, so is from N to S

    True False Earth's North magnetic pole and North geographic pole are different.
    No and No. The magnetic North Pole is somewhere in Canada (last time I
    looked), while the geographic North Pole is in the middle of the Artic Ocean.

    The Magnetic North Pole is a south pole.

    True False When a bar magnet is cut in half, one half becomes a N pole and the other half becomes a separate S pole.
    No you get two dipoles.

    True False Like poles attract each other and unlike poles repel.
    read your notes

    True False Magnetic field lines always form closed loops.
    This depends on which version of reality you live in (your teachers may be
    expecting your answer to be "true" unless you are a graduate student of
    either partice physics or astrophysics)

    RonL
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  3. #3
    Forum Admin topsquark's Avatar
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    Quote Originally Posted by CaptainBlack View Post
    The Magnetic North Pole is a south pole.
    You know I had never realized that, though when I think about it it's obvious.

    -Dan
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  4. #4
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    thank you
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