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Homework Help: Ampere's circuital law

  1. Jul 16, 2010 #1
    1. The problem statement, all variables and given/known data
    A solenoid of 1.33cm long and 2.6cm in diameter carries a current of 17.8A . the magnetic field inside the solenoid is 22.4 T . find the length of the wire forming the solenoid.

    2. Relevant equations
    B= Uo N i / L .

    3. The attempt at a solution

    the problem is i dont find the value of N? as it cannot be 1 for solenoid. so how do i solve this problem.
  2. jcsd
  3. Jul 16, 2010 #2


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    You can find the ratio N/L from the field and the current and since you know that L = 1.33 cm, you can find N. Does this help?
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