engineering recuitment AAI ATC Junior Executive 2025 Mock Test Series Physics Electromagnetic Induction and Inductance Self-Induction
A circular coil consists 70 closely wound turns and has a radius of 10 cm. An externally produced magnetic field of magnitude 2 × 10-3 T is applied perpendicular to the coil. The net flux through the coil is found to vanish when the current in the coil is 2.2 A. The inductance of the coil is
1
2 mH
2
3 mH
3
4 mH
4
1.5 mH