In the circuit shown below 18 V Zener diode has zero Zener resistance – McqOptions

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1.	In the circuit shown below 18 V Zener diode has zero Zener resistance and a knee current of 2 mA. The minimum value of R so that voltage across it does not fall below 18 V is:
A.	1000 Ω
B.	500 Ω
C.	9000 Ω
D.	2000 Ω
Answer» B. 500 Ω

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