An $8\,V$ Zener diode along with a series resistance $R$ is connected across a $20\,V$ supply (as shown in the figure). If the maximum Zener current is $25\,mA$,then the minimum value of $R$ will be $\Omega$.

In the following circuit,the power dissipated in the Zener diode is (in $W$)

In a Zener regulated power supply, a Zener diode with $V_{z} = 6.0 \; V$ is used for regulation. The load current is to be $4.0 \; mA$ and the unregulated input is $10.0 \; V$. What should be the value of the series resistor $R_{S}$?

If the current in the Zener diode is five times the current in $R_1$ and the breakdown voltage of the diode is $6 \text{ V}$,find the value of $R$.

$A$ Zener diode is connected to a battery and a load as shown below. The currents $I$,$I_Z$,and $I_L$ are respectively:

$A$ Zener diode having breakdown voltage $V_z = 6 \, V$ is used in a voltage regulator circuit as shown in the figure. The minimum current required to pass through the Zener to act as a voltage regulator is $10 \, mA$ and the maximum allowed current through the Zener is $40 \, mA$. The maximum value of $R_s$ for the Zener to act as a voltage regulator is (in $\Omega$)