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Calibrating a Hall probe (again!)

  1. May 4, 2005 #1
    Ok, like all A2 students i've got this darn planning exp.

    For the calibration of my Hall probe I have proposed measuring the voltage from two fields of known strength.

    By using a solenoid (a uniform field) I can use the equation B=Miu n L to work out the flux of the field but have become a wee bit stuck.

    How exactly do I do this? If i use a field of 0T and then another one of say 100T, am I trying to work out what 1v corresponds to in Tesla?

    I'm all over the place here, any help please! :cry:

    Thanks :)
     
  2. jcsd
  3. May 4, 2005 #2
    I do not quite understand what is the problem. If you know what is the field value at two points you can draw a line because the Hall resistance is proportional to the magnetic field. So you may fix the current and measure the voltage at a known field. Then you may assume that at zero field thre will be zero voltage at the same current. It is not exactly so, but as a first and good approximation that will work. Better to take more points through which you can draw a curve.
     
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