Question:
For a transistor, the current ratio $'\beta'_{dc}$ is defined as the ratio of
For a transistor, the current ratio $'\beta'_{dc}$ is defined as the ratio of
Updated On: Feb 9, 2024
- collector current to emitter current
- collector current to base current
- base current to collector current
- emitter current to collector current
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The Correct Option is B
Solution and Explanation
The current amplification factor of a transistor for direct current (DC) is the ratio of collector current $\left(I_{C}\right)$ to the base current $\left(I_{B}\right)$ in common emitter configuration i.e.,
$B_{D C}=\frac{I_{C}}{I_{B}}$
However, the ratio of collector current to the emitter current gives the value of current amplification factor in common base configuration, i.e.,
$\alpha_{ DC }=\frac{I_{C}}{I_{E}}$
$B_{D C}=\frac{I_{C}}{I_{B}}$
However, the ratio of collector current to the emitter current gives the value of current amplification factor in common base configuration, i.e.,
$\alpha_{ DC }=\frac{I_{C}}{I_{E}}$
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Concepts Used:
Semiconductors
Semiconductors are a crystalline solid materials, whose electrical conductivity lies between a conductor and an insulator. Semiconductors are mainly used in the manufacturing of electronic devices like capacitors, transistors, diodes, Integrated circuits, etc.
Properties of Semiconductor:
- Semiconductor acts like an insulator at Zero Kelvin. On increasing the temperature, it works as a conductor.
- Due to their exceptional electrical properties, semiconductors can be modified by doping to make semiconductor devices suitable for energy conversion, switches, and amplifiers.
- Lesser power losses.
Uses of Semiconductor:
- Semiconductors are widely used in manufacturing electronics devices like transistors, diodes, sensors, integrated circuits.
- Semiconductors are widely used in all electronic devices, like mobile phones, digital cameras, communication devices, trains, ATMs, etc.