Question

The collector current will not reach the steady state value instantaneously because of_________

(a) stray capacitances

(b) resistances

(c) input blocking capacitances

(d) coupling capacitance

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I'd like to ask this question from Transistor Switching Times topic in division Transistor Characteristics of Electronic Devices & Circuits

Answer 1

The correct answer is (a) stray capacitances

The explanation is: When a pulse is given, the collector current will not reach the steady state value instantaneously because of stray capacitances. The charging and discharging of capacitance makes the current to reach a steady state value after a given time constant.