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The amplification factor for a transistor is given by_________

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The amplification factor for a transistor is given by_________

(a) A=αRL/re

(b) A=αRLre

(c) A=re/ αRL

(d) A=RL/reα

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The question is from The Transistor as an Amplifier topic in portion Transistor Characteristics of Electronic Devices & Circuits

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Right option is (a) A=αRL/re

The explanation is: One of the most important application of a transistor is an amplifier. A small change in signal voltage produces an appreciable change in emitter current because the input circuit has low resistance (α=∆IC/IE).

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