In the given circuit, the breakdown voltage of the Zener diode is 3.0 V. What is the value of

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Solution

Q.
In the given circuit, the breakdown voltage of the Zener diode is 3.0 V. What is the value of $I_{Z}$ [2024]

1 3.3 mA

2 5.5 mA

3 10 mA

4 7 mA

Ans.
(2)

Breakdown voltage of the Zener diode, $V_{z} = 3 V$

Let potential at $B = 0 V$

Potential at $E (V_{P}) = 10 V$ and $V_{C} = V_{A} = 3 V$

$I = \frac{10 - 3}{1000} = \frac{7}{1000} A and I_{1} = \frac{3}{2000} A$

Also, $I_{Z} + I_{1} = I$

Therefore, $I_{Z} = \frac{7 - 1.5}{1000} = 5.5 mA$

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