एक कुंडली में 3.76 V का विद्युत वाहक बल (EMF) प्रेरित होता है जब उसमें धारा 6 सेकंड में 4 A से बढ़कर 12 A हो जाती है। कुंडली का स्व-प्रेरकत्व (self-inductance) है:

A coil of resistance 100 Ω is placed in a magnetic field linking a flux of 1 mWb. The coil has 100 turns and a galvanometer of 400 Ω resistance is connected in series with it. Find the average induced e.m.f. if the magnetic flux linking the coil changes to 0.2 mWb in 110 second.

An aircraft of wingspan 40 m flies horizontally in Earth's magnetic field component of 5 × 10-5 T at a speed of 500 m/s. The e.m.f. generated between the tips of the wings of the aircraft is: