Assertion : In common base configuration, the | vedclass

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(B) In a common base configuration, the input current is the emitter current $(I_e)$ and the output current is the collector current $(I_c)$.The curre

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If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.

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(B) In a common base configuration, the input current is the emitter current $(I_e)$ and the output current is the collector current $(I_c)$.The current gain $(\alpha)$ is defined as the ratio of the change in collector current to the change in emitter current: $\alpha = \frac{\Delta I_c}{\Delta I_e}$.Since $I_e = I_c + I_b$ and the base current $(I_b)$ is always positive, $I_c Thus, the Assertion is correct.The collector-base junction is indeed reverse-biased in a transistor to ensure that the majority of charge carriers injected from the emitter are collected at the collector, which is essential for amplification.Thus, the Reason is also correct.However, the fact that the collector is reverse-biased explains why the transistor works as an amplifier, but it is not the direct reason why the current gain is less than unity (which is due to the definition of the common base configuration where $I_c Therefore, both are correct, but the Reason is not the correct explanation of the Assertion.

$Assertion$ : In common base configuration, the current gain of the transistor is less than unity.
$Reason$ : The collector terminal is reverse biased for amplification.

Similar Questions

In an $n-p-n$ common emitter $(CE)$ transistor,the collector current changes from $5\,mA$ to $16\,mA$ for a change in base current from $100\,\mu A$ to $200\,\mu A$,respectively. The current gain of the transistor is:

The value of $I_c$ for the configuration shown is in $mA$.

In the study of a transistor as an amplifier,if $\alpha = \frac{I_{C}}{I_{E}}$ and $\beta = \frac{I_{C}}{I_{B}}$,where $I_{C}$,$I_{B}$,and $I_{E}$ are the collector,base,and emitter currents respectively,then:

In a common emitter transistor amplifier,the output voltage and input voltage have a phase difference of

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$Assertion$ : In common base configuration, the current gain of the transistor is less than unity.$Reason$ : The collector terminal is reverse biased for amplification.