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What is the value of current gain in the CE short circuit current frequency response model?

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What is the value of current gain in the CE short circuit current frequency response model?

(a) hfe

(b) -hfe

(c) hre

(d) –hre

This question was posed to me in unit test.

My question is based upon The CE Short Circuit Current Frequency Response topic in chapter High Frequency Transistor of Electronic Devices & Circuits

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Correct answer is (b) -hfe

The best I can explain: The current gain of a common emitter (CE) amplifier can be expressed in terms of hybrid parameters in the CE short circuit current frequency response model. The current gain hfe is the forward transfer characteristics and is used to calculate the current gain in common emitter amplifiers.

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