MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What causes drift current in a p-n junction diode? |
| A. | Electric field |
| B. | Charge carriers density |
| C. | Collision of electrons |
| D. | Electric potential |
| Answer» C. Collision of electrons | |
| 2. |
Which of the following is true in case of the unbiased p-n junction? |
| A. | The high potential at n-side and low potential at p-side |
| B. | The high potential at p-side and low potential at n-side |
| C. | p and n both are at the same potential |
| D. | Undetermined |
| Answer» B. The high potential at p-side and low potential at n-side | |
| 3. |
Which of the following accounts for the presence of the potential barrier in the depletion layer? |
| A. | Ions |
| B. | Holes |
| C. | Electrons |
| D. | Forbidden band |
| Answer» B. Holes | |
| 4. |
What accounts for the flow of charge carriers in forward and reverse biasing of silicon p-n diode? |
| A. | Drift in forward bias and diffusion in forward bias |
| B. | Drift in reverse bias and diffusion in forward bias |
| C. | Drift in both reverse and forward bias |
| D. | Diffusion in both forward and reverse bias |
| Answer» C. Drift in both reverse and forward bias | |
| 5. |
Forward biasing of p-n junction diode offers high resistance. |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
Which of the following is a transistor material? |
| A. | Chip |
| B. | Insulator |
| C. | Semiconductor |
| D. | Metal |
| Answer» D. Metal | |
| 7. |
Which of the following constitutes Zener diode? |
| A. | Oscillator |
| B. | Regulator |
| C. | Rectifier |
| D. | Filter |
| Answer» C. Rectifier | |
| 8. |
Find out the application of the diode. |
| A. | Oscillator |
| B. | Amplifier |
| C. | Rectifier |
| D. | Modulator |
| Answer» D. Modulator | |
| 9. |
What will be the resistance measured by an ohmmeter, if a p-n diode is reverse biased? |
| A. | Zero |
| B. | Low |
| C. | High |
| D. | Infinite |
| Answer» D. Infinite | |
| 10. |
What will happen when a p-n diode is reversed-biased? |
| A. | No current flows |
| B. | The depletion region is increased |
| C. | The depletion region is reduced |
| D. | The height of the potential barrier is reduced |
| Answer» C. The depletion region is reduced | |