In amplifier why signal voltage is always less than biasing voltage.

For a Common emitter emplifer the output voltage across collector resistance 2kOmega is 2V. If the current amplification factoris beta =100 find the input signal voltage. The vase resistance is 1kOmega .

In a transistor, the base current is changed by 20muA . This results in a change of 0.02V in base emitter voltage and a change of 2mA in the collector current. .If the transistor is used as an amplifier with load resistance of 5KΩ .Find its voltage gain.

A change of 0.2 mA in the base current causes a 5 mA in the the collector current of common emitter amplifier. ii) If the input resistance is 2KΩ and its voltage gain is 75, calculate the load resistance used in the circuit.

The input resistance of a silicon transistor is 100 Ω. Base current is changed by 40μA which results in a change in collector current by 2 mA. This transistor is used as a common emitter amplifier with a load resistance of 4K Ω. Find the voltage gain of the amplifier.

State whether the following are true or false.Justify your answer.(i)The value of tan A is always less than 1

Why is adsorption always exothermic?