Question

In a silicon transistor, a change of 7.89 mA in the emitter current if produces a change of 7.8 mA in the collector current, then the base current must change by ____________.

पर्याय

• 0.9 µA

• 900 µA

• 90 µA

• 9 µA

Answer 1

In a silicon transistor, a change of 7.89 mA in the emitter current if produces a change of 7.8 mA in the collector current, then the base current must change by 90 µA.

Explanation:

${\displaystyle \Delta {\text{I}}_{\text{B}}=\Delta {\text{I}}_{\text{E}}-\Delta {\text{I}}_{\text{C}}}$

${\displaystyle =(7.89-7.8) \text{mA}}$

${\displaystyle =0.09 \text{mA}}$

${\displaystyle =9\times {10}^{-2}\text{mA}}$

${\displaystyle =9\times {10}^{-2}\times {10}^3\mu \text{A}}$

${\displaystyle =90 \mu \text{A}}$