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The following statements are related to a tunnel diode
1. Fermi level in n-side lies inside valence band
2. Excellent conduction is possible in reverse bias
3. In reverse bias negative resistance is exhibited
4. VP > VV
5. It can act as oscillator
6. The magnitude of lP is decided by impurity concentration and Junction area
7. Ge tunnel diode is used for commercial applications
Which of the above statements are false?
  • a)
    1, 3 & 4
  • b)
     1, 3, 4 & 7
  • c)
    1, 3, 4, 6 & 7
  • d)
    2, 5, 6 & 7
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
The following statements are related to a tunnel diode1. Fermi level i...
Understanding Tunnel Diode Statements
The statements regarding tunnel diodes encompass both true and false assertions. Here’s a breakdown of the statements and the reasoning behind identifying the false ones.
1. Fermi level in n-side lies inside valence band
- False: In a tunnel diode, the Fermi level of the n-side is actually located within the conduction band, not the valence band.
2. Excellent conduction is possible in reverse bias
- True: Tunnel diodes can conduct well in reverse bias due to their unique tunneling effect.
3. In reverse bias negative resistance is exhibited
- False: Negative resistance is primarily observed in forward bias conditions, not in reverse bias.
4. VP VV
- False: This statement is ambiguous and typically not correct as it implies a specific relationship that doesn't hold universally for tunnel diodes.
5. It can act as oscillator
- True: Tunnel diodes can indeed function as oscillators due to their negative resistance properties.
6. The magnitude of lP is decided by impurity concentration and Junction area
- True: The peak current (lP) is influenced by the doping concentration and the area of the junction.
7. Ge tunnel diode is used for commercial applications
- False: While germanium (Ge) tunnel diodes exist, silicon (Si) tunnel diodes are more commonly used in practical applications.
Conclusion: Identifying the False Statements
Based on the analysis:
- False Statements: 1, 3, 4, 7
- Correct Answer: Option A (1, 3, 4, 7) is identified as the false set of statements.
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The following statements are related to a tunnel diode1. Fermi level in n-side lies inside valence band2. Excellent conduction is possible in reverse bias3. In reverse bias negative resistance is exhibited4. VP > VV5. It can act as oscillator6. The magnitude of lP is decided by impurity concentration and Junction area7. Ge tunnel diode is used for commercial applicationsWhich of the above statements are false?a)1, 3 & 4b)1, 3, 4 & 7c)1, 3, 4, 6 & 7d)2, 5, 6 & 7Correct answer is option 'A'. Can you explain this answer?
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