38.For the circuit shown, what is the rate of change of the current in the inductor when the current in the battery is 0.50 A? 
(A) 200 A/s
(B) 300 A/s
(C) 400 A/s
(D) 500 A/s
(E) 600 A/s
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統計: A(2), B(2), C(0), D(0), E(0) #3427038
統計: A(2), B(2), C(0), D(0), E(0) #3427038