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Physics Semiconductor Electronics JEE Main 2019 MCQ (Single Correct)

Ge and Si diodes start conducting at 0.3 V and 0.7 V respectively. In the following figure if Ge diode connection are reversed, the value of changes by: (assume that the Ge diode has large breakdown voltage)

A
0.8 V
B
0.6 V
C
0.2 V
D
0.4 V

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Text Solution

Verified by Experts
The correct answer is:
D

Initially Ge and Si are both forward biased so current will effectively pass through Ge diode V

And if “Ge” is revesed then current will flow through “Si” diode

V

Clearly, changes by V

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