1. The problem statement, all variables and given/known data A 10 cm long solenoid with 241 turns and radius R = 3.00 cm has a current flowing through it of Io = 200 mA. What is the magnetic field strength inside the solenoid (in T)? 3. The attempt at a solution So i know i have to use the formula B = (uo)(n)(Io) uo = a constant 1.257 x 10^-6 n = 241/.1 = 2410 N/L Io = 200 mA or .2 A So when plugging in B = (1.257x10^-6)(2410)(.2) = 6.06E-4 I am getting the wrong answer... can someone please tell me where i went wrong?