A transistor is operated in common emitter configuration at constant collector voltage ( V_ c = 1.5 ~V ) such that a change in the base current from (100 μ A ) to (150 μ A ) produces a change in the collector current

Correct answer: D. 100 Current gas =β=(Δ I_C)/(Δ I_B) aligned & = (10-5) mA (150-100) mA = 5 × 10^ -3 50 × 10^ -16 & =10 C aligned

NEET 2006

NEET 2006 · Physics · Semiconductors

A transistor is operated in common emitter configuration at...

A transistor is operated in common emitter configuration at constant collector voltage (

\mathrm{V}_{\mathrm{c}}=

1.5

\mathrm{~V}

) such that a change in the base current from (100 \mu

\mathrm{A}

) to (150 \mu

\mathrm{A}

) produces a change in the collector current from 5 mA to 10 mA. The current gain ((

\beta)

) is:-

D. 100

Current gas

=\beta=\frac{\Delta I_C}{\Delta I_B}

\begin{aligned}& =\frac{(10-5) \mathrm{mA}}{(150-100) \mathrm{mA}}=\frac{5 \times 10^{-3}}{50 \times 10^{-16}}\\ & =10 \mathrm{C} \end{aligned}