- Home/
- GATE ELECTRONICS/
- GATE EC/
- Article
What is the Controlling Current in Common Base Configuration?
By BYJU'S Exam Prep
Updated on: September 25th, 2023
Choose the right answer to the question, what is the controlling current in a common base configuration? Which of the following options is correct to explain along with the detailed explanation.
- Ie
- Ib
- Ic
- None of the above.
Table of content
Answer – A. Ie.
The answer to the question, what is the controlling current in a common base configuration is Ie.
Solution
The detailed solution to the question is the controlling current in a common base configuration? It is provided here.
In a common base configuration, the input is applied between emitter and base, and output is taken between collector and base terminal. Therefore, the emitter current is the controlling current which will control the output collector current of the common base configuration.
The common base configuration is also basically regarded as a current controlled current source (CCCS) or current amplifier, which behaves like a current buffer whose current gain is less or close to unity. It provides higher voltage gain. The power gain of the common base configuration is nearly equal to the voltage gain.
Therefore, the controlling current in a common base configuration is Ie.
Hence, Option (A) is the correct answer.
