Q158 / 160 · TS EAMCET 2019 (03 May Shift 2) · Physics

In a transistor circuit, the collector current is changed by $89 mA$ , if the emitter current is changed to $9.0 mA$ . The value of current amplification factor, $β$ is

Correct answer
A
$89$
B
$92$
C
$84$
D
$96$

Solution

β = \frac{∆ I_{C}}{∆ I_{B}} = \frac{∆ I_{C}}{∆ I_{E} - ∆ I_{C}} = \frac{8.9}{9 - 8.9} = 89

Hence, the correct answer is option: 'A'.

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