In a fluorescent lamp choke (a small transformer) 100 V of reverse voltage is produced when the choke current changes uniformly from 0.25 A to 0 in a…

In a fluorescent lamp choke (a small transformer) $\displaystyle 100$ V of reverse voltage is produced when the choke current changes uniformly from $\displaystyle 0.25$ A to $\displaystyle 0$ in a duration of $\displaystyle 0.025$ ms. The self-inductance of the choke (in mH ) is estimated to be \_\_\_\_.