The current in a 4.70 mH inductor decays over time according to the following function, where t is in seconds.
\(I(t)=(0.943 A)e^{-(396s^{-1})t}\)
(a) What is the induced emf across the inductor at t= 5.00 ms?
(b) How long does it take the emf to drop below 1.25 mV?