If the DC bias current, Id$,$ for a forward biased PN junction is equal to $1\mathrm{.}5$ mA then what is the voltage across this diode, Vd$,$ in millivolts? Assume that the saturation current for the diode, Is$,$ is equal to $10$ fA$.($Note that $1$ fA $=1$ femtoamp $=1$ x $10^-15$ A$.)$ Also assume that the thermal voltage is equal to Vt $=$ kt$/$q $=26$mV$.$ Since the diode current is very sensitive to small changes in the diode voltage, be sure to give your answer to the nearest millivolt!