(B) In an $NPN$ transistor,the emitter current $(I_E)$ is the sum of the base current $(I_B)$ and the collector current $(I_C)$,expressed as $I_E = I_

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After electrons are lost in the base,only the remaining ones reach the collector

(B) In an $NPN$ transistor,the emitter current $(I_E)$ is the sum of the base current $(I_B)$ and the collector current $(I_C)$,expressed as $I_E = I_B + I_C$.Since a small fraction of electrons injected from the emitter recombine with holes in the base region,the base current $(I_B)$ is non-zero.Therefore,the collector current is given by $I_C = I_E - I_B$.Because $I_B > 0$,it follows that $I_C < I_E$.

Class 12 Physics Semiconductor Electronics Junction Transistor

Easy

In the case of $NPN$ transistors,the collector current is always less than the emitter current because:

AIIMS 1983 All AIIMS

A
Collector side is reverse biased and emitter side is forward biased
B
After electrons are lost in the base,only the remaining ones reach the collector
C
Collector side is forward biased and emitter side is reverse biased
D
Collector being reverse biased attracts fewer electrons

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Semiconductor Electronics

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Junction Transistor

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AIIMS 1983 Paper All AIIMS years →

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In the case of $NPN$ transistors,the collector current is always less than the emitter current because:

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