The graph given below represents $I-V$ characteristics of a Zener diode. The part of the characteristics curve that is most relevant for its operation as a voltage regulator is

In the circuit shown below,the maximum Zener diode current will be $..... \text{mA}$.

$A$ Zener diode, having a breakdown voltage of $15 \text{ V}$, is used in a voltage regulator circuit as shown. The current through the Zener diode is (in $\text{ mA}$)

$A$ Zener diode with a Zener voltage of $30 \text{ V}$ is connected in a circuit as shown in the figure. The maximum current through the Zener diode is: (in $\text{ mA}$)

$A$ $5.0 \, V$ stabilized power supply is required to be designed using a $12 \, V$ $DC$ power supply as an input source. The maximum power rating of the zener diode is $2.0 \, W$. The minimum value of resistance $R_{s}$ in $\Omega$ connected in series with the zener diode will be (in $.5$)

$A$ Zener diode,having a breakdown voltage equal to $15\,V$,is used in a voltage regulator circuit as shown in the figure. The current through the diode is......$mA$.