Networks Analysis and Synthesis - Engineering

Q1:

Two coils having self inductances of 10 mH and 40 mH are mutually coupled. The maximum possible mutual inductance is

A 40 mH

B 20 mH

C 10 mH

D 5 mH

ANS:B - 20 mH

Maximum mutual inductance = L1L2 = 20 mH.