Question 148: Semiconductors and Logic Gates

Question

For the circuit shown below, the current through the Zener diode is -

Accepted Answer

Assuming zener diode doesnot undergo breakdown, current in circuit
= $${{120} \over {15000}}$$ = 8mA
$$ 	herefore $$  Voltage drop across diode
= 80 V > 50 V.
The diode undergo breakdown.
Current is R
1
= $${{70} \over {5000}}$$ = 14mA
Current is R
2
= $${{50} \over {10000}}$$ = 5mA
$$ 	herefore $$  Current through diode = 9mA

Answer

5 mA

Answer

zero

Answer

14 mA

Answer

9 mA

Semiconductors and Logic Gates

For the circuit shown below, the current through the Zener diode is -

Choose the correct answer: