If the reverse saturation current in a PN junction silicon diode is 1 nA, find the applied voltage for a forward current 0.5 mA.

....fast and fast..please..

B. For the circuit shown below, assume that the zener diode has Vz-3.3V and rz=092 when reverse biased, and has a 0.7V drop when forward biased. Fill the following table for values of Vo for different values of input voltage Vi. R1 Vi Vi -8V OV 8V 1k 5V N V2 R21k Vo Vo