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  • Answer please! Ge and Si diodes start conducting at 0.3V and 0.7V respectively. In the following figure if Ge diode connection are reversed, the value of V0 changes by: (assume that the Ge diode has large breakdown voltage)

Ge and Si diodes start conducting at 0.3V and 0.7V respectively. In the following figure if Ge diode connection are reversed, the value of V0 changes by:

(assume that the Ge diode has large breakdown voltage)

  • Option 1)

    0.4 V

  • Option 2)

    0.6 V

  • Option 3)

    0.8 V

  • Option 4)

    0.2 V

Answers (1)

best_answer

 

P -N junction as diode -

It is a one way device. It offers a low resistance when forward biased and high resistance when reverse biased.

- wherein

R = 0, Forward 

R  \rightarrow \infty Reverse

 

V_{o}  before reversing G_{e}

V_{o1}=\frac{12-0.3}{5k}      (Since threshold voltage of G_{e} <  S_{i} , so  G_{e}  conducts)

 

V_{o}  afer reversing G_{e}

G_{e} is reverse biased , so S_{i} conducts current 

\therefore V_{o2}=\frac{12-0.7}{5k}

\therefore Change = 0.4V


Option 1)

0.4 V

Option 2)

0.6 V

Option 3)

0.8 V

Option 4)

0.2 V

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