At a certain instant the current flowing through a 5.0-H inductor is 3.0 A. If the energy in the inductor at this instant is increasing at a rate of 3.0 J/s, how fast is the current changing? a. 0.20 A/s.
b. 0.80 A/s.
c. 0.60 A/s.
d. 0.10 A/s.
e. 0.40 A/s.