1. If the current in an inductor, L = 1 ml, varies linearly from 0 to +1mA in 1/200 seconds, what is the EMF - Ez induced across the inductor? EL = 2. The current in a 30 mH inductor varies like a "triangle" wave as sketched below in the lower left graph. The amplitude of the current in(max) = 1 mA and the period T= 10 ms. a) For the current graph, label the horizontal and vertical axis and include scale. b) Sketch the back EMF - &, as a function of time on lower right grid. Label the horizontal and vertical axes and include scale. 3. What is the resultant EMF if the current is somehow changed instantaneously in a step from 0 V to 1 V