$A$ Zener diode having a breakdown voltage of $5.6 \ V$ is connected in reverse bias with a battery of emf $10 \ V$ and a resistance of $100 \ \Omega$ in series. The current flowing through the Zener diode is (in $mA$)

For the given circuit, the power across the Zener diode is $....... \text{mW}$.

$A$ Zener diode with voltage $V_z = 6 \ V$ is used to maintain a constant voltage across a load resistance $R_L = 1000 \ \Omega$. $A$ series resistor $R_s = 100 \ \Omega$ is used. If the source $e.m.f$ is $E = 9 \ V$,then the power dissipated in the Zener diode is .......... $W$.

Two Zener diodes ($A$ and $B$) having breakdown voltages of $6\, V$ and $4\, V$ 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: $(V_{\text{input}} = 0\, V$ at $t = 0)$ (figures are qualitative).

For the given circuit (shown in part $(A)$), the time-dependent input voltage $v_{in}(t)$ and the corresponding output voltage $v_{o}(t)$ are shown in part $(B)$ and part $(C)$, respectively. Identify the components that are used in the circuit between points $X$ and $Y$.

In the given circuit diagram,a $5 \,V$ Zener diode along with a series resistance $R$ is connected across a $50 \,V$ power supply. If the maximum Zener current is $90 \,mA$,the minimum value of the resistance $R$ required will be $..... \,\Omega$.