The $I-V$ characteristics of an electronic device are shown in the figure. The device is:

For the given circuit,the power across the zener diode is ..... $mW$.

The figure represents a voltage regulator circuit using a Zener diode. The breakdown voltage of the Zener diode is $6\,V$ and the load resistance is $R_L = 4\,k\Omega.$ The series resistance of the circuit is $R_i = 1\,k\Omega.$ If the battery voltage $V_B$ varies from $8\,V$ to $16\,V,$ what are the minimum and maximum values of the current through the Zener diode?

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

In the given circuit,the current through the Zener Diode is close to.......$mA$.

In the circuit diagram shown in the figure,the current through the zener diode is (in $mA$)