The total inductance of two coils when connected in series is 0.7 H & 0.3 H depending upon the relative direction of the current in the coils. Coil1, when isolated from other coils, has a self-inductance of 0.2H. Find mutual inductance between the two coils.
1
0.3 H
2
0.1 H
3
0.2 H
4
10 H