Networks Analysis and Synthesis - Engineering

Q1:

Two similar coupled coils are connected in series. The total inductance in series aiding connection is 100 mH. If currents is 3 A, the energy stored in magnetic field is

A 0.9 J

B 0.45 J

C 0.225 J

D 1.8 J

ANS:C - 0.225 J

Energy = 0.5 LI2.