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A semiconductor is cooled from T₁K to T₂K. Its resistance
- a)will decrease
- b)will increase
- c)will first decrease and then increase
- d)will not change
Correct answer is option 'B'. Can you explain this answer?
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A semiconductor is cooled from TK to TK. Its resistancea)will decrease...
Effect of Temperature on Resistance of a Semiconductor
When a semiconductor is cooled from one temperature to another, its resistance will increase.
Explanation:
Temperature Dependence of Resistance:
- In semiconductors, as temperature decreases, the resistance tends to increase.
- This is because at lower temperatures, the movement of charge carriers (electrons and holes) within the semiconductor lattice is reduced.
Effect on Semiconductor Resistance:
- The increase in resistance of a semiconductor as it is cooled from TK to TK is a result of reduced thermal energy.
- With lower thermal energy, the charge carriers have less kinetic energy to move through the lattice, leading to a higher resistance.
Why Resistance Increases:
- The increase in resistance of a semiconductor as it is cooled is due to the decrease in carrier mobility at lower temperatures.
- The reduced mobility of charge carriers results in a higher resistance for the semiconductor.
Conclusion:
- In summary, when a semiconductor is cooled from one temperature to another, its resistance will increase due to the decrease in carrier mobility at lower temperatures.
When a semiconductor is cooled from one temperature to another, its resistance will increase.
Explanation:
Temperature Dependence of Resistance:
- In semiconductors, as temperature decreases, the resistance tends to increase.
- This is because at lower temperatures, the movement of charge carriers (electrons and holes) within the semiconductor lattice is reduced.
Effect on Semiconductor Resistance:
- The increase in resistance of a semiconductor as it is cooled from TK to TK is a result of reduced thermal energy.
- With lower thermal energy, the charge carriers have less kinetic energy to move through the lattice, leading to a higher resistance.
Why Resistance Increases:
- The increase in resistance of a semiconductor as it is cooled is due to the decrease in carrier mobility at lower temperatures.
- The reduced mobility of charge carriers results in a higher resistance for the semiconductor.
Conclusion:
- In summary, when a semiconductor is cooled from one temperature to another, its resistance will increase due to the decrease in carrier mobility at lower temperatures.
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A semiconductor is cooled from TK to TK. Its resistancea)will decreaseb)will increasec)will first decrease and then increased)will not changeCorrect answer is option 'B'. Can you explain this answer?
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