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, RL = 4 kΩ. The series resistance of the circuit is Ri = R = 1 kΩ. If the battery voltage VB varies from 8 V to 16 V, what are the minimum and maximum values of the current through the Zener diode?

The figure represents a voltage regulator circuit using a Zener diode.

1.	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, RL = 4 kΩ. The series resistance of the circuit is Ri = R = 1 kΩ. If the battery voltage VB varies from 8 V to 16 V, what are the minimum and maximum values of the current through the Zener diode?
A.	0.5 mA; 6 mA
B.	1 mA; 8.5 mA
C.	0.5 mA; 8.5 mA
D.	1.5 mA; 8.5 mA
Answer» D. 1.5 mA; 8.5 mA