In the circuit,if the forward voltage drop for the diode is $0.5 \,V$,the current will be.....$ mA$

In the circuit shown,if the forward voltage drop for the diode is $0.5\, V$,the current in the circuit will be.....$mA$.

The current-voltage relation of a diode is given by $I = (e^{1000V/T} - 1) \; mA$,where the applied voltage $V$ is in volts and the temperature $T$ is in Kelvin. If a student makes an error of $\pm 0.01 \; V$ while measuring the voltage to obtain a current of $5 \; mA$ at $300 \; K$,what will be the error in the value of the current in $mA$?

The $V-I$ characteristic of a diode is shown in the figure. The ratio of forward to reverse bias resistance is

Which two important processes occur during the formation of a $p-n$ junction?

When forward bias is applied to a $p-n$ junction,then what happens to the potential barrier $(V_B)$ and the width $(X)$ of the depletion region?