Appearances Can Be Deceptive: A Circuit Paradox

  • Suhash Chandra Dutta Roy

How can a paradox be deceptive? What appears to be an obvious conclusion may not be correct after all! This is illustrated with the help of a differential amplifier circuit, whose gain is actually half of what it appears to be. This paradox is indeed deceptive. See for yourself and decide if you wish to agree or not.


Paradox DC analysis 



Acknowledgement is due to my students in the EE204 N class, to whom I had posed this paradox as a challenge during the semester commencing January 1996. Special mention must be made of Ankur Srivastava, Atul Saroop and Ram Sadhwani whose enthusiastic participation in the resolution of the paradox made it an enjoyable experience for me.


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Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  1. 1.Department of Electrical EngineeringIndian Institute of Technology DelhiNew DelhiIndia

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