Question

For the circuit shown, find current through the Zener diode.

• A. 0.3 mA
• B. 0.5 mA
• C. 0.4 mA
• D. 0.6 mA

Answer 1

The correct option is A 0.3 mA

$i=\frac{\Delta V}{R}$
$i_1=i_2+i_3\frac{12-5}{14\times {10}^3}=\frac{5-0}{25\times {10}^3}+i_{3}0.5\times {10}^{-3}=0.2\times {10}^{-3}+i_3{i}_3=0.3\times {10}^{-3}A$