railway RRB JE (CBT I + CBT II) Mock Test 2024 Network Theory Magnetic Coupling Circuits Self Inductance
An air cored coil has a self-inductance of 10 mH. If the number of the coil is double, keeping the length and area of cross section of the coil same, the self-inductance will be _______.
1
20 mH
2
10 mH
3
40 mH
4
5 mH