An inductor with inductance L and an inductor with inductance 2L are connected in parallel.When the rate of change of the current in the larger inductor is 2000 A/s the rate of change of the current in the smaller is:
A)400 A/s
B)1000 A/s
C)1600 A/s
D)2000 A/s
E)4000 A/s

Question

Quizplus · Accepted Answer

In parallel, the voltage across inductors is the same. Using V = L(di/dt), for the larger inductor: V = 2L(2000 A/s). For the smaller inductor: V = L(di/dt). Equating the two: L(di/dt) = 2L(2000 A/s), so di/dt = 4000 A/s.

An Inductor with Inductance L and an Inductor with Inductance