The 6 V zener diode shown in the figure has zero zener resistance and a knee current of 5 mA. The minimum value of R so that the voltage across it does not fall below 6 V is

The 6 V zener diode shown in the figure has zero zener resistance and

1.	The 6 V zener diode shown in the figure has zero zener resistance and a knee current of 5 mA. The minimum value of R so that the voltage across it does not fall below 6 V is
A.	1.2 kΩ
B.	80 Ω
C.	50 Ω
D.	0 Ω
Answer» C. 50 Ω