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Physical electronics devices and ics miscellaneous

Physical Electronics Devices and ICs

  1. Assuming that the diodes are ideal in figure, the current in diode D1 is—


    1. 8 mA
    2. 5 mA
    3. 0 mA
    4. – 3 mA
Correct Option: C

The given circuit
From the given circuit, we conclude that diode D2 remains ‘ON’. Now, if we assume diode D1 is ‘ON’ then the above circuit can be modified as
It makes the voltage between terminal A & B equals to OV., which is not possible because it violates the Kirchoff’s law. Therefore the current in diode D1 is OmA.
Hence alternative (C) is the correct choice.



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