In Zener diode, for currents greater than the knee current, the V-I curve is almost straight line  to x-axis.

Two Zener diodes ($A$ and $B$) having breakdown voltages of $6 \mathrm{V}$ and  $4 \mathrm{V}$ respectively, are connected as shown in the circuit below. The output voltage $V_0$ variation with input voltage linearly increasing with time, is given by ($V_{input} = 0 \mathrm{V} \text{at} t = 0$)

In the circuit shown, what will be the current through the $6 \mathrm{V}$ zener?

Take the breakdown voltage of the zener diode used in the given circuit as $6 \mathrm{V}$. For the input voltage shown in the figure below, the time variation of the output voltage is: (Graphs drawn are schematic and not to the scale)

In which bias can a Zener diode be used as voltage regulator?

The $6 \mathrm{V}$ Zener diode shown in the figure has negligible resistance and a knee current of $5 \mathrm{mA}$. The minimum value of $\mathrm{R}\mathrm{ }\left(\mathrm{in}\mathrm{ }\mathrm{\Omega }\right)$ so that the voltage across it does not fall below $6 \mathrm{V}$ is

The zener diode has a $V_z=30 \mathrm{V}$. The current passing through the diode for the following circuit is___$\mathrm{mA}.$

What will be the current flowing through the $6 \mathrm{k\Omega }$ resistor in the circuit shown, where the breakdown voltage of the Zener is $6 \mathrm{V}?$

In connection with the circuit drawn below, the value of current flowing through $2 \mathrm{k\Omega }$ resistor is______$\times {10}^{-4} \mathrm{A}.$

For the circuit shown below, calculate the value of $I_{\mathrm{z}}:$

The value of power dissipated across the zener diode $\left(V_{\mathit{z}}=15 \mathrm{V}\right)$ connected in the circuit as shown in the figure is $x\times {10}^{-1} \mathrm{W}$.

The value of $x$ to the nearest integer is _______.

The value of the resistor, $R_S$, needed in the DC voltage regulator circuit shown here, equals: