What happens to the collector voltage of an NPN transistor if the base current is increased?

All Answers (25) Hello, an increase in base current means more bias to the transistor which further means collector current will also increase but till the limiting value of the transistor parameters.

What is a collector in a NPN transistor?

The Collector region collects most of all charge carriers emitted from the Emitter. The Base region triggers and controls the amount of current flows through the Emitter to Collector. The equivalent circuit of an NPN transistor is as shown in the figure below.

When NPN transistor is used as an amplifier electrons move from base to collector?

Thus, when an npn transistor is used as an amplifier, holes move from base to emitter. So, the correct answer is option D i.e. holes move from base to emitter.

What is the purpose of the collector?

The function of a transistor’s collector is to ‘collect’ the carriers (electrons or holes) that have gotten past the base from the transistor’s emitter. A transistor is a switch, like a tap of water.

What is the working of NPN transistor?

The NPN transistor amplifies the weak signal enter into the base and produces strong amplify signals at the collector end. In NPN transistor, the direction of movement of an electron is from the emitter to collector region due to which the current constitutes in the transistor.

What happens when the collector current is increased in a transistor?

As the collector current is increased, the emitter releases more number of electrons. This causes more collisions of electrons at collector. This happens in a cycle and produces such a condition in which temperature is further more increased.

When the collector current is increased in a transistor?

As the temperature of a transistor increases, the collector current will increase because: Intrinsic semiconductor currrent between the collector and base increases with temperature. Its flow through the biasing resistors drives the base more positive, increasing forward bias on the base-emitter diode.

What is the function of NPN transistor?

The NPN transistor is designed to pass electrons from the emitter to the collector (so conventional current flows from collector to emitter). The emitter “emits” electrons into the base, which controls the number of electrons the emitter emits.