1.

Given that IB = 5mA and hfe = 55, find load current.(a) 28mA(b) 280mA(c) 2.5A(d) 2AI have been asked this question during an interview.Origin of the question is Hybrid Equivalent Model in section Transistor Biasing and Low Frequencies of Analog Circuits

Answer»

The CORRECT choice is (b) 280mA

To elaborate: In GIVEN circuit, which is an emitter FOLLOWER, current gain = 1 + hfe

IL = IB (1+hfe)

IL = 5mA(56) = 280 mA.



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