The circuit in figure shows a zener-regulated d.c. power supply. The zener diode voltage is 15 V. The minimum value of RL down to which the output voltage remains constant is

The circuit in figure shows a zener-regulated d.c. power supply. The z

1.	The circuit in figure shows a zener-regulated d.c. power supply. The zener diode voltage is 15 V. The minimum value of RL down to which the output voltage remains constant is
A.	27 ohm
B.	45 ohm
C.	15 ohm
D.	24 ohm
Answer» C. 15 ohm

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The circuit in figure shows a zener-regulated d.c. power supply. The zener diode voltage is 15 V. The minimum value of RL down to which the output voltage remains constant is

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