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phy124:lab_4 [2010/02/18 15:13]
mdawber
phy124:lab_4 [2010/02/19 12:33] (current)
mdawber
Line 79: Line 79:
 **Note:** Here the magnetic field which contributes dominantly to the magnetic flux inside the coil is the magnetic field inside the magnet, indicated by the high density of field lines at either end of the bar. The average magnetic field is directed parallel to the axis of the bar and goes straight from the south to the north pole inside the bar.  This is the direction of the magnetic field you are concerned about for this part of the lab.  You are no longer interested in the field outside of the magnet like you were in Part I.  (see the sketch for Part I above) **Note:** Here the magnetic field which contributes dominantly to the magnetic flux inside the coil is the magnetic field inside the magnet, indicated by the high density of field lines at either end of the bar. The average magnetic field is directed parallel to the axis of the bar and goes straight from the south to the north pole inside the bar.  This is the direction of the magnetic field you are concerned about for this part of the lab.  You are no longer interested in the field outside of the magnet like you were in Part I.  (see the sketch for Part I above)
  
-Insert the bar magnet north pole first from left to right, slowly into the coil and observe the needle deflection. Note whether the needle deflection stays at maximum or falls back to zero when the magnet motion ceases. Then withdraw the magnet slowly from the coil and observe the needle deflection. Note the direction of the needle deflection. Do it a couple of times.+Insert the bar magnet ​**north pole first from left to right**, slowly into the coil and observe the needle deflection. Note whether the needle deflection stays at maximum or falls back to zero when the magnet motion ceases. Then withdraw the magnet slowly from the coil and observe the needle deflection. Note the direction of the needle deflection. Do it a couple of times.
  
 Repeat this procedure with a fast motion of the bar magnet. Repeat this procedure with a fast motion of the bar magnet.
phy124/lab_4.1266524020.txt ยท Last modified: 2010/02/18 15:13 by mdawber
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