Question

When the signal is applied, the ratio of change of collector current to the ratio of change of base current is called_________

(a) dc current gain

(b) ac current gain

(c) base current amplification factor

(d) emitter current amplification factor

This question was addressed to me in class test.

My question is from CE Amplifier with an Emitter Resistance in division Low Frequency Transistor Amplifier Circuit of Electronic Devices & Circuits

Answer 1

The correct answer is (b) ac current gain

The best I can explain: The ac current gain is given by β=∆IC/∆IB. When the signal is applied, the ratio of change of collector current to the ratio of change of base current is called ac current gain.