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)=4kOmega` the series resistance of the circuit is `R_(i)=1kOMega`. if the battery voltage `V_(B)` varies from 8 V to 16 V, what are the minimum and maximum values of the currect through Zener diode?
