Q. No.If the reverse bias in a junction diode is changed from \(5~\text V\) to \(15~\text V\) then the value of current changes from \(38~\mu \text{A}\) to \(88~\mu \text{A}.\) The resistance of the junction diode will be:
1. \(4\times10^{5}\)
2. \(3\times10^{5}\)
3. \(2\times10^{5}\)
4. \(10^{6}\)
Subtopic: Â PN junction |
 84%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
The given circuit has two ideal diodes connected as shown in the figure below. The current flowing through the resistance \(R_1\) will be:
| 1. | \(2.5~\text A\) | 2. | \(10.0~\text A\) |
| 3. | \(1.43~\text A\) | 4. | \(3.13~\text A\) |
Subtopic: Â PN junction |
 87%
From NCERT
NEET - 2016
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
What is the reading of the ideal ammeters \(A_1\) and \(A_2\) connected in the given circuit diagram, if \(\mathrm{p\text-n}\) junction diodes are ideal?
| 1. | \(2~\text A\) and zero | 2. | \(3~\text A\) and \(2~\text A\) |
| 3. | \(2~\text A\) and \(3~\text A\) | 4. | Zero and \(2~\text A\) |
Subtopic: Â PN junction |
 84%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Of the diodes shown in the following diagrams, which one of the diodes is reverse biased?
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: Â PN junction |
 84%
From NCERT
AIPMT - 2004
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
A potential barrier of \(0.50~\text V\) exists across a \(\mathrm{p\text-n}\) junction. If the depletion region is \(5.0\times10^{-7}~\text{m}\) wide, the intensity of the electric field in this region is:
| 1. | \(1.0 \times 10^6 ~\text{V/m}\) | 2. | \(1.0 \times 10^5 ~\text{V/m}\) |
| 3. | \(2.0 \times 10^5 ~\text{V/m}\) | 4. | \(2.0 \times 10^6 ~\text{V/m}\) |
Subtopic: Â PN junction |
 83%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
For the given circuit of the \(\mathrm{p\text-n}\) junction diode, which of the following statements is correct?
| 1. | In F.B. the voltage across \(R\) is \(V.\) |
| 2. | In R.B. the voltage across \(R\) is \(V.\) |
| 3. | In F.B. the voltage across \(R\) is \(2V.\) |
| 4. | In R.B. the voltage across \(R\) is \(2V.\) |
Subtopic: Â PN junction |
 80%
From NCERT
AIPMT - 2002
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Reverse bias applied to a junction diode:
| 1. | lowers the potential barrier |
| 2. | raises the potential barrier |
| 3. | increases the majority carrier current |
| 4. | increases the minority carrier's current |
Subtopic: Â PN junction |
 75%
From NCERT
AIPMT - 2003
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
The depletion layer in the \(\mathrm{p\text-n}\) junction region is caused by:
| 1. | the drift of holes. |
| 2. | diffusion of charge carriers. |
| 3. | migration of impurity ions. |
| 4. | drift of electrons. |
Subtopic: Â PN junction |
 78%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
The barrier potential of a \(\mathrm{p\text-n}\) junction diode does not depend on:
| 1. | diode design | 2. | temperature |
| 3. | forward bias | 4. | doping density |
Subtopic: Â PN junction |
 74%
From NCERT
AIPMT - 2003
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
When a forward bias is applied to a \(\mathrm{p\text-n}\) junction, then what happens to the potential barrier \(V_B,\) and the width of charge depleted region \(x\)?
| 1. | \(V_B\) increases, \(x\) decreases | 2. | \(V_B\) decreases, \(x\) increases |
| 3. | \(V_B\) increases, \(x\) increases | 4. | \(V_B\) decreases, \(x\) decreases |
Subtopic: Â PN junction |
 70%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
© 2025 GoodEd Technologies Pvt. Ltd.