A 3.5 mH inductor and a 4.5 mH inductor are connected in series and a time varying current is established in them.When the total emf of the combination is 16 V, the emf of the larger inductor is:
A)2.3 V
B)7.0 V
C)9.0 V
D)28 V
E)36 V

Question

Quizplus · Accepted Answer

The emf induced in an inductor is directly proportional to its inductance. When connected in series, the total inductance is the sum of individual inductances, which is 3.5 mH + 4.5 mH = 8.0 mH. The ratio of the larger inductor's inductance to the total inductance is 4.5 mH / 8.0 mH = 0.5625. Therefore, the emf across the larger inductor is 0.5625 * 16 V = 9.0 V.

A 35 MH Inductor and a 4