Q. No.One part of a device is connected to the negative terminal of a battery and the other part is connected to the positive terminal of a battery. If their ends are now altered, current does not flow in circuit. The device is:
1. \(\mathrm{p\text-n}\) Junction
2. Transistor
3. Zener diode
4. Triode
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| 1. | Concentration of positive and negative ions near the junction. |
| 2. | Concentration of positive charges near the junction. |
| 3. | Depletion of negative charges near the junction. |
| 4. | Increment in concentration of holes and electrons near the junction. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe depletion layer has (for an unbiased \(\mathrm{p\text-n}\) junction):
1. electrons
2. holes
3. static ions
4. neutral atoms
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFrom the following diode circuit, which diode is in forward biased condition:
| 1. |  |
2. |  |
| 3. |  |
4. |  |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe current \((I)\) in the circuit will be:
| 1. | \(\dfrac{5}{40}~\text{A}\) | 2. | \(\dfrac{5}{50}~\text{A}\) |
| 3. | \(\dfrac{5}{10}~\text{A} \) | 4. | \(\dfrac{5}{20}~\text{A}\) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| 1. | High potential at the \(\mathrm{n}\) side and low potential at the \(\mathrm{p}\) side. |
| 2. | High potential at the \(\mathrm{p}\) side and low potential at the \(\mathrm{n}\) side. |
| 3. | \(\mathrm{p}\) and \(\mathrm{n}\) both are at the same potential. |
| 4. | Undetermined. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFor 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 \(2V\). |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyReverse-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 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe 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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyOf the diodes shown in the following diagrams, which one of the diodes is reverse biased?
| 1. |  |
2. |  |
| 3. |  |
4. |  |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology
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