I have been working at this problem for a while.
Given the values of V1 and R1, plus the fact that at the instant SW1 is closed the rate of change of I is approx. 45 A/s, how do I calculate the inductance of L1?
My initial approach was to assume that, because the voltage across the inductor at t=0 is equal to 0v, the back-EMF is equal to 15.5 V, which I can plug into a rearranged emf = -L * (∆I / ∆t), as L = emf / (∆I / ∆t), which yielded a value of 0.34 H. Though this seems to make sense to me, but I'm not sure of this is true due to the fact that I was provided a value for R1.
Let me know if I'm on the right track, I am relatively new to electrical engineering, and might have made some mistakes in my calculations.
I appreciate the help!
edit: as it turns out inductance isn't measured in farads :p