railway DFCCIL Junior Executive 2023 (CBT 1 & CBT 2) Mock Test Electromagnetic Theory Magnetostatics
The mutual inductance between two coupled coils is 10 mH. If turns in one coil are doubled and that in the other are halved then the mutual inductance will be:
1
10 mH
2
5 mH
3
20 mH
4
15 mH