| Ge and Si diodes conduct at \[0.3 V\]and \[0.7\,V\] respectively. In the following figure if Ge diode connection are reversed, the value of \[{{\operatorname{V}}_{0}}\] changes by |
 |
A) 0.2 V
B) 0.4 V
C) 0.6 V
D) 0.8 V
Correct Answer: B
Solution :
| In case the circuit will be completed through Ge diode and so |
| \[{{V}_{i}}=12-0.3=11.7\operatorname{V}\] |
| When Ge diode gets reverse, the Si diode will be in forward bias and so |
| \[{{V}_{f}}=12-0.7=11.3\operatorname{V}.\] |
| Now \[\Delta V={{V}_{f}}\sim {{V}_{i}}=11.3\sim 11.7\] |
| \[=0.4V\] |
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