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Transistor as an Amplifier

When an n-p-n...

Question

When an n-p-n transistor is used as an amplifier, then

A

electrons move from base to collector

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B

electrons move from emitter to base

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C

electrons move from collector to base

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D

holes move from base to emitter

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Solution

The correct option is A electrons move from emitter to base
Electrons move from emitter to base
When forward bias is applied on n-p-n transistor, then it works as an amplifier in forward biased n-p-n transistor, electrons move from emitter to base and holes move from base to emitter.

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Q. The diagram shows the biasing of an n-p-n transistor in common emitter configuration used in an amplifier.
The design of the transistor is such that 98% of the charge carriers passing through the emitter reach the collector. If base current changes from

50 μ A

100 μ A

, then the corresponding change in the voltage across the load resistance will be

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