Q. No.The current \(I\) in the circuit shown below is:
(All diodes are ideal and identical.)
1. \(\dfrac{5}{3}~\text{A}\)
2. \(\dfrac{15}{2} ~\text{A}\)
3. \(\dfrac{1}{3} ~\text{A}\)
4. \(\dfrac{5}{9} ~\text{A}\)
(All diodes are ideal and identical.)
1. \(\dfrac{5}{3}~\text{A}\)
2. \(\dfrac{15}{2} ~\text{A}\)
3. \(\dfrac{1}{3} ~\text{A}\)
4. \(\dfrac{5}{9} ~\text{A}\)
Subtopic: PN junction |
70%
Level 2: 60%+
NEET - 2026
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In the circuit shown below, the voltage appearing across the diode \(D\) will be of the form:
| 1. |  |
| 2. |  |
| 3. |  |
| 4. |  |
Subtopic: PN junction |
65%
Level 2: 60%+
NEET - 2026
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Two statements are given below:
Choose the correct answer from the options given below:
| \((\mathrm{A})\) | When the forward bias voltage across a \(\mathrm{p\text{-}n}\) junction diode increases above a certain threshold voltage, the diode current increases significantly. |
| \((\mathrm{B})\) | This current is called reverse saturation current. |
| 1. | Both Statements \((\mathrm{A})\) and \((\mathrm{B})\) are False. |
| 2. | Statement \((\mathrm{A})\) is True, but Statement \((\mathrm{B})\) is False. |
| 3. | Both Statements \((\mathrm{A})\) and \((\mathrm{B})\) are True. |
| 4. | Statement \((\mathrm{A})\) is False, but Statement \((\mathrm{B})\) is True. |
Subtopic: PN junction |
63%
Level 2: 60%+
NEET - 2026
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Subtopic: PN junction |
Level 3: 35%-60%
NEET - 2024
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In the given circuits \((a),\) \((b),\) and \((c),\) the potential drop across the two \({\mathrm{p\text-n}}\) junctions is equal in:
| 1. | both circuits \((a)\) and \((c)\) |
| 2. | circuit \((a)\) only |
| 3. | circuit \((b)\) only |
| 4. | circuit \((c)\) only |
Subtopic: PN junction |
64%
Level 2: 60%+
NEET - 2022
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The increase in the width of the depletion region in a \(\mathrm{p\text{-}n}\) junction diode is due to:
1. reverse bias only
2. both forward bias and reverse bias
3. increase in forwarding current
4. forward bias only
Subtopic: PN junction |
78%
Level 2: 60%+
NEET - 2020
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Subtopic: PN junction |
86%
Level 1: 80%+
NEET - 2020
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In a \(\mathrm{p\text{-}n}\) 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 \(\mathrm{p\text{-}n}\) junction. |
| 4. | affects the overall \(\mathrm{V\text{-}I}\) characteristics of a \(\mathrm{p\text{-}n}\) junction. |
Subtopic: PN junction |
77%
Level 2: 60%+
NEET - 2018
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Subtopic: PN junction |
85%
Level 1: 80%+
NEET - 2017
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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: PN junction | Applications of PN junction |
87%
Level 1: 80%+
NEET - 2016
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