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.