Question

In the given circuit the current through Zener Diode is close to:

• A. $0.0\text{mA}$
• B. $6.7\text{mA}$
• C. $4.0\text{mA}$
• D. $6.0\text{mA}$

Answer 1

The correct option is A $0.0\text{mA}$

By voltage distribution theory,

$\frac{V_1}{V_2}=\frac{1}{3}$

The potential difference across $1500\Omega$ resistor is given by,

$V_2=\frac{3}{4}\times 12=9\text{V}$

Since, the voltage across the Zener diode does not reach breakdown voltage, its resistance will be infinite & current through it is zero.

Hence, option $\left(A\right)$ is correct.