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Homework Help: Current needed through solenoid to produce given B field

  1. Apr 18, 2010 #1
    1. Magnetic resonance imaging needs a magnetic field strength of 1.5 T. The solenoid is 1.8 m long and 75 cm in diameter. It is tightly wound with a single layer of 2.20-mm-diameter superconducting wire.

    2. B = mu0BI / l

    3. Is there a way to do this without finding N? Either way, how do I calculate N with the given information?
  2. jcsd
  3. Apr 18, 2010 #2


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    Hi Linus Pauling! :smile:
    It's "tightly wound", and it's 1.8m long … :wink:
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