List of top Physics Questions on Amplifiers

In a CE transistor amplifier, the signal voltage across the collector resistance is 2.5 V. The input signal voltage is 0.02 V. If the base and collector resistances are 1.5 k\(\Omega\) and 2.5 k\(\Omega\), find the current amplification factor.

In a common emitter (CE) amplifier having a voltage gain G, the transistor used has transconductance 0.03 mho and current gain 25. If the above transistor is replaced with another one with transconductance 0.02 mho and current gain 20, the voltage gain will be