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Transistor: Working

In a common b...

Question

In a common base transistor circuit, $I_{C}$ is the output current and $I_{E}$ is the input current. The current gain a pc is

Equal to one

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Greater than one

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Less than one

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None of these

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Solution

The correct option is C Less than one
In common base transistor circuit, the current gain $(α_{D C} = \frac{I_{C}}{I_{E}})$ is less than one.

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Similar questions

(r_{i})

β

(R_{i}

= {[\frac{Change in emitter base voltage (△ V_{B E})}{Change in base current (△ I_{B})}]}_{at constant V_{C E}}

R_{i} = {(\frac{△ V_{B E}}{△ I_{B}})}_{V_{C E}}

(β) = {(\frac{△ I_{C}}{△ I_{B}})}_{V_{C E}}

\frac{△ I_{C}}{△ I_{E} - △ I_{C}}

\frac{\frac{△ I_{C}}{△ I_{E}}}{\frac{△ I_{C}}{△ I_{E}} - \frac{△ I_{C}}{△ I_{E}}}

\frac{α}{1 - α}

\Rightarrow β = \frac{α}{1 - α}

R_{L}

R_{B E}

β

I_{B}, I_{C}, I_{E}

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