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In the given circuit, what is the value of current through the silicon diode?

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In the given circuit, what is the value of current through the silicon diode?

(a) 9.3 mA

(b) 9.7 mA

(c) 10 mA

(d) 0 mA

The question was asked in exam.

This interesting question is from Parallel and Series Configuration topic in chapter Diode Circuit of Analog Circuits

1 Answer

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Best answer
The correct option is (d) 0 mA

Best explanation: The source voltage initially increases from 0-10 V. As the source voltage increases, the voltage across the diodes also increases. When the voltage across the diodes reaches a value of 0.3 V, the Germanium diode starts conducting, whereas the silicon diode is still in the off state. Hence, the voltage across silicon diode = 0.3 V and hence, the current according to the approximate equivalent circuit model is equal to zero.

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