Pn Junction
High-Yield Trend
Questions 11 MCQs
A transistor is operated in a common emitter configuration at constant collector voltage Vc = 1.5 V such that a change in the base current from 100 \mu A to 150 \mu A produces a change in the collector current from 5 mA to 10 mA. The current gain (\beta ) is:
1. 67
2. 75
3. 100
4. 50
Which of the following is an example of forward biasing?
| 1. | 2. | ||
| 3. | 4. |
| 1. | the positive terminal of the battery is connected to the p-side and the depletion region becomes thick. |
| 2. | the negative terminal of the battery is connected to the n-side and the depletion region becomes thin. |
| 3. | the positive terminal of the battery is connected to the n-side and the depletion region becomes thin. |
| 4. | the negative terminal of the battery is connected to the p-side and the depletion region becomes thick. |
Two ideal diodes are connected to a battery as shown in the circuit. The current supplied by the battery is:
| 1. | 2. | zero | |
| 3. | 4. |
In the given figure, a diode is connected to an external resistance Ā and an EMF of . If the barrier potential developed across the diode is , the current in the circuit will be:
1.
2.
3.
4.
The given circuit has two ideal diodes connected as shown in the figure below. The current flowing through the resistance will be:
| 1. | 2. | ||
| 3. | 4. |
Which one of the following represents the forward bias diode?
| 1. | Ā |
| 2. | Ā |
| 3. | |
| 4. |
In a junction diode, the change in temperature due to heating:
| 1. | affects only reverse resistance. |
| 2. | affects only forward bias. |
| 3. | does not affect the resistance of the junction. |
| 4. | affects the overall characteristics of a junction. |
Out of the following which one is a forward-biased diode?
| 1. | Ā |
| 2. | |
| 3. | |
| 4. |
| 1. | both circuits and |
| 2. | circuit only |
| 3. | circuit only |
| 4. | circuit only |
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Preparing Pn Junction for NEET
Pn Junction is a specific sub-topic that frequently appears in the NEET examination. Understanding the underlying principles and practicing targeted questions is key to mastering this concept.
The questions compiled above are previous year questions (PYQs) directly related to Pn Junction. Practicing these specific questions helps you understand the difficulty level and the examiner's approach to this topic.
Topic Frequently Asked Questions
Is Pn Junction a high-weightage topic?
You can refer to the priority and consistency badges at the top of this page. High priority topics should be thoroughly revised multiple times before the exam.
Should I memorize the solutions?
No, it is highly recommended to understand the core concept and methodology behind each solution rather than memorizing them, as exact questions are rarely repeated, but the concepts definitely are.