defence exam Army Havildar SAC Mock Test Series 2025 Physics Electromagnetic Induction and Inductance Self-Induction
When the current in a coil changes from 2 amp. to 4 amp. in 0.05 sec., an e.m.f. of 8 volt is induced in the coil. The coefficient of self inductance of the coil is
1
0.1 henry
2
0.2 henry
3
0.4 henry
4
0.8 henry