If the voltage across the diode in the given circuit is $0.5 \ V$,then the current flowing through the circuit is ...... $mA$.

Explain the barrier potential and depletion region in a $p-n$ junction diode.

Depletion region in an unbiased semiconductor diode is a region consisting of

Which of the following statements is not correct when a junction diode is in forward bias?

$A$ wafer of pure germanium crystal has two parts $X$ and $Y$. The end $X$ is obtained by doping with arsenic and $Y$ with indium. It is connected to a battery as shown in the figure. Which of the following statements is correct?

$A$ semiconductor device $X$ is connected in series with a battery and a resistor. $A$ current of $10 \ mA$ is found to pass through the circuit. If the terminals of $X$ are connected in reverse,the current drops to almost zero. $X$ may be