The current flowing through the zener diode of figure below

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The current flowing through the zener diode of figure below is:

1. 5 mA
2. zero
3. 20 mA
4. 12.5 mA

Correct Option: A

From given figure

I =	50 – V_z	=	50 – 30
	R		4 × 10³

or I = 5 × 10^–3
or I = 5 mA.