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Magnetic field outside solenoid

  1. Nov 19, 2012 #1
    Instead of the usual

    B = μ0NI for field inside solenoid...

    how should i go about finding the field let say... 10cm away from one end of the solenoid
    1. directly at the z-axis
    2. not directly at the z-axis

    this is assuming the solenoid has finite length, finite number of turns ,finite radius
    (ex. L = 25cm , R = 10cm, N = 1000, I = 1A)

    Please help me out hehe thx
  2. jcsd
  3. Nov 19, 2012 #2


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    2016 Award

    Staff: Mentor

    You can use the Biot–Savart law or some equations derived from that law.
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