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Magnetic Field From a Solenoid - Biot-Savart Law

  1. Jan 2, 2012 #1
    I'm fairly confident I can express the strength of a magnetic field along the axis of a current carrying loop at some distance x away using the Biot-Savart Law. I'm just trying to extend this idea for a solenoid with N turns. I'm assuming that the current would become NI in this case?

    Last edited: Jan 2, 2012
  2. jcsd
  3. Jan 2, 2012 #2
    Only if the coils lay atop one another.

    The proper way is to integrate I along the helical path of the solenoid winding.
  4. Jan 2, 2012 #3
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