(a) The reverse-saturation current of a pn junction diode is \(I_{S}=10^{-11} \mathrm{~A}\). Determine the diode voltage to produce currents of (i) \(10 \mu \mathrm{A}, 100 \mu \mathrm{A}\), \(1 \mathrm{~mA}\), and (ii) \(-5 \times 10^{-12} \mathrm{~A}\).

(b) Repeat part (a) for \(I_{S}=10^{-13} \mathrm{~A}\) and part (a) (ii) for \(-10^{-14} \mathrm{~A}\).