1. The problem statement, all variables and given/known data A solenoid that is 117 cm long has a cross-sectional area of 20.0 cm2. There are 1010 turns of wire carrying a current of 9.56 A. (a) Calculate the energy density of the magnetic field inside the solenoid. (b) Find the total energy in joules stored in the magnetic field there (neglect end effects). 2. Relevant equations B = μo*n*I, where n=N/l energy density = B^2/(2*μo) total energy = answer to part a times the volume 3. The attempt at a solution Plugging the formulas into each other, I got (((1010/1.17)*9.56*4*10^-7)^2)/(8*10^-7) = 13.6 J/m^3 for part (a) and 13.6*.2*1.17 = 3.19 for part (b) Both are incorrect.