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  4. The zener diode normally operates under reverse bias condition, the major use of this fact is in the applications where we require

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Q. The zener diode normally operates under reverse bias condition, the major use of this fact is in the applications where we require

NTA AbhyasNTA Abhyas 2020Semiconductor Electronics: Materials Devices and Simple Circuits

Solution:

In reverse bias, once Zener diode attains the breakdown voltage, there is no change in voltage across the diode even if we change the current in the circuit by changing the position of rheostat and that's why the voltage across Zener diode is constant
Solution