When base -emitter voltage of a transistor connected in the common-emitter mode is changed by `20 mV` the collector current is changed by `25 mA`. Find the transconductance.

When the base current in a common emitter transistor is changed from 20 mu A to 70 mu A the collector current is changed from 0.5mA to 3.0mA .The current gain is

The a-c current gain of a transistor is beta=19 . In its common-emitter configuration, what will be the change in the collector-current for a change of 0.4 mA in the base-current? What will be the change in the emitter current?

The a-c current gain of a transistor is beta=19 . In its common-emitter configuration, what will be the change in the collector-current for a change of 0.4 mA in the base-current? What will be the change in the emitter current?

The current gain of a transistor in common base mode is 0.99. What is the change in collector current if the emitter current changes by 5 mA ?

A transistor is used in common-emitter mode in an amplifier circuit. It is found that when a signal of 20mV is added to the base-emitter voltage, the base current changes by 20muA and collector current changes by 1.5mA . Determine the factor beta, input resistance R_(i) , the transconductance and voltage gain, Given load resistance R_(L)=6kOmega .