When the current in a coil changes from 2 A to 4 A in 0.05 s, and emf of 8V is induced in the coil. The coefficient of self-inductin of the coil is: (A) 0.1 H (B) 0.2 H (C) 0.4 H (D) 0.8 Hâ–ºCorrect Option Correct Option is: B