Question

which of the following is possible when looking at an iron-filings pattern over an arbitrary configuration of magnets? a. it is possible to tell which poles are north and south, but only if you have two magnets. if there are more than that, then we cannot reason anything out. b. it is possible to tell which poles are north and which are south. c. it is not possible to tell which poles are north or south, but it is possible to tell which poles are the same and which are different, by observing what the field lines do. d. it is not possible to tell any information about the poles of the magnets.

          which of the following is possible when looking at an iron-filings pattern over an arbitrary configuration of magnets?  a. it is possible to tell which poles are north and south, but only if you have two magnets. if there are more than that, then we cannot reason anything out.  b. it is possible to tell which poles are north and which are south.  c. it is not possible to tell which poles are north or south, but it is possible to tell which poles are the same and which are different, by observing what the field lines do.  d. it is not possible to tell any information about the poles of the magnets.

Added by Andrew S.

Question

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