Question

Q.43 In an n-p-n common emitter (CE) transistor the collector current changes from 5 \( mA \) to \( 16 mA \) for the change in base current from \( 100 \mu A \) and \( 200 \mu A \), respectively. The current gain of transistor is Options 1. 110 2. 0.9 3. 210 4. 9

Answer 1

Correct option is (1) 110

We know that, current gain = \(\frac{ΔI_c}{ΔI_B}\)

\(=\frac{16mA-5mA}{200\pi-100\pi A}\)

\(=\frac{11\times10^{-3}}{100\times10^{-6}}\)

= 110