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प्रश्न
When a forward bias is applied to a p-n junction, it ______.
पर्याय
raises the potential barrier.
reduces the majority carrier current to zero.
lowers the potential barrier.
None of the above.
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उत्तर
When a forward bias is applied to a p-n junction, it lowers the potential barrier.
Explanation:
When a forward bias is applied to a p-n junction, it lowers the value of potential barrier. In the case of a forward bias, the potential barrier opposes the applied voltage. Hence, the potential barrier across the junction gets reduced.
संबंधित प्रश्न
Explain the working of P-N junction diode in forward and reverse biased mode.
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(i) Forward bias
(ii) Reverse bias
(iii) Depletion region
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Figure shows the transfer characteristics of a base biased CE transistor. Which of the following statements are true?
At Vi = 0.4 V, transistor is in active state.
At Vi = 1 V, it can be used as an amplifier.
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At Vi = 2.5 V, it can be used as a switch turned on.
The breakdown in a reverse biased p–n junction diode is more likely to occur due to ______.
- large velocity of the minority charge carriers if the doping concentration is small.
- large velocity of the minority charge carriers if the doping concentration is large.
- strong electric field in a depletion region if the doping concentration is small.
- strong electric field in the depletion region if the doping concentration is large.
Can the potential barrier across a p-n junction be measured by simply connecting a voltmeter across the junction?
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| ‘A’ | ‘B’ | ‘C’ |
 |
 |
 |
Describe the following term briefly:
minority carrier injection in forward biasing.
Draw a labelled characteristic curve (l-V graph) for a semiconductor diode during forward bias.
Choose the correct circuit which can achieve the bridge balance.
