$A$ circuit is arranged as shown in the figure. The output voltage ${V}_{0}$ is equal to $\ldots \ldots \text{ V}$.

The region near the junction of an unbiased $p-n$ junction diode is known as the depletion layer. This layer is depleted of

In the given circuit,the current flowing through the ideal $P-N$ junction diode is .......$mA$.

$A$ $p-n$ junction diode can withstand up to $20 \, mA$ current under forward bias. The diode has a potential difference of $0.5 \, V$ across it, which is assumed to be independent of current. What is the maximum voltage of the battery used to forward bias the diode when a resistance of $125 \, \Omega$ is connected in series with it (in $V$)?

In the circuit, all three diodes $D_1, D_2, D_3$ have a forward resistance of $50 \text{ } \Omega$ each and infinite backward resistance. If the battery voltage is $5 \text{ V}$, find the current through the $100 \text{ } \Omega$ resistance. (in $\text{mA}$)

In the diodes shown in the diagrams,which one is reverse biased?