Assuming that the junction diode is ideal, the current in the arrangement shown in the figure is: (in $\text{mA}$)

$A$ $P-N$ junction diode is in forward bias with a current of $10 \ mA$. The potential drop across the diode is $0.5 \ V$. Assuming the current is independent of the potential,what is the maximum voltage of the battery in series with a $200 \ \Omega$ resistor to maintain this forward bias condition? (in $V$)

In the reverse biasing of a $p-n$ junction diode,

The cause of the potential barrier in a $p-n$ junction diode is

The $P-N$ junction depletion layer is made up of .......

In a $P-N$ junction under reverse bias,the depletion layer contains .......