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The output resistance of CB transistor is given by _________(a) ∆VCB/∆IC(b) ∆VBE/∆IB(c) ∆VBE/∆IC(d) ∆VEB/∆IEThis question was addressed to me in an interview.I would like to ask this question from The CB Characteristics topic in chapter Transistor Characteristics of Electronic Devices & Circuits

Answer»

The correct CHOICE is (a) ∆VCB/∆IC

Easiest EXPLANATION: The ratio of CHANGE in collector base VOLTAGE (∆VCB) to resulting change in collector current (∆IC) at CONSTANT emitter current (IE)¬ is defined as output resistance. This is denoted by ro.



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