The current in a semiconductor diode is often measured by the Shockley equation I = 10(eav 1) where V is the voltage across the diode; I0 is the reverse current; a is a 5, 10 = 106, and V is uniformly distributed constant; and I is the resulting diode current. If a = over (1, 3). Find a. E(I) b. Var(I)