The input resistance of a common emitter amplifier is 330Ω and the load resistance is 5 k Ω . A change of base current is 15 μ A results in the change of collector current by 1 mA . The voltage gain o

Question

The input resistance of a common emitter amplifier is 330Ω and the load resistance is 5 k Ω . A change of base current is 15 μ A results in the change of collector current by 1 mA . The voltage gain of amplifier is

TestHub · Accepted Answer

Given: Δ I C ​ = 1 mA = 1 0 − 3 A Δ I b ​ = 15 μ A = 15 × 1 0 − 6 A R L ​ = 5 k Ω = 5 × 1 0 3 Ω Ri = 330Ω The voltage gain of an amnl The voltage gain of an amplifier A r ​ = Δ I b ​ × R i ​ Δ I C ​ × R L ​ ​ = 15 × 1 0 − 6 × 330 1 0 − 3 × 5 × 1 0 3 ​ ≈ 1010 ​

Physics - Semiconductors Question with Solution | TestHub

Options:

Doubts & Discussion