MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Analog Circuits knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
How does diffusion current produce the depletion region? |
| A. | The diffusion causes the holes and electrons to collect at the junction |
| B. | The diffusion is because of the depletion region |
| C. | The depletion region aids diffusion |
| D. | The statement is not true |
| Answer» B. The diffusion is because of the depletion region | |
| 2. |
Why does a gradient occur in a semi-conductor? |
| A. | Because of current flow |
| B. | Because of diffusion current |
| C. | Because of drift current |
| D. | Because of difference in concentrations |
| Answer» E. | |
| 3. |
What is mobility? |
| A. | Ease of carrier drift |
| B. | Ease of current flow |
| C. | Ease of access to the junction |
| D. | Ease of movement |
| Answer» B. Ease of current flow | |
| 4. |
What is the average net velocity in the direction of the electric field? |
| A. | Velocity of electrons |
| B. | Velocity of holes |
| C. | Drift velocity |
| D. | Collision velocity |
| Answer» D. Collision velocity | |
| 5. |
Is the statement “Diffusion current produces Drift current” true? |
| A. | Yes |
| B. | No |
| C. | Cannot Say |
| D. | Insufficient Data |
| Answer» B. No | |
| 6. |
The equation Jn=qnµnE (A/cm2) represents___________ |
| A. | Drift current |
| B. | Drift current density |
| C. | Diffusion current |
| D. | Diffusion current density |
| Answer» C. Diffusion current | |
| 7. |
Conductors also have drift current. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
What makes up the total current in a semi-conductor? |
| A. | Only diffusion current |
| B. | Only drift current |
| C. | Drift+diffusion current |
| D. | Drift+diffusion+biasing current |
| Answer» D. Drift+diffusion+biasing current | |
| 9. |
Diffusion current is due to ___________ |
| A. | Applied electric field over a given distance |
| B. | Variation in carrier concentration |
| C. | Random motion of holes |
| D. | Recombination of holes and electrons |
| Answer» C. Random motion of holes | |
| 10. |
Drift current is due to ___________ |
| A. | Applied electric field over a given distance |
| B. | Random motion of electrons |
| C. | Random motion of holes |
| D. | Recombination of holes and electrons |
| Answer» B. Random motion of electrons | |