I have this question. If I can get that formula, I will be able to solve it! :)
Here is the question:
The current in a 51 mH inductor changes with time as I = b t2 − a t. With a = 20 A/s and b = 7 A/s2, find the magnitude of the induced emf, |E|, at t = 1.2 s. Answer in units of V.
E = Emf
This is what I need to know! :)
The Attempt at a Solution
I am guessing that I will have to differentiate the equation. Please help! :)