HC Verma Chapter 45 Problem 12

Problem Statement

Zener diode V_Z = 5.6 V, series R = 1 kohm, V_input = 9 V. Find Zener current.

Key Concepts

Zener regulation

Relevant Formulas

I = (V_in – V_Z)/R

Step-by-Step Solution

V_R = 9 – 5.6 = 3.4 V. I = 3.4/1000 = 3.4 mA.

Final Answer

I_Z = 3.4 mA

Tips and Tricks

Zener clamps output at V_Z in reverse breakdown.

Common Mistakes

Always use SI units. Check energy conservation accounts for all forms.