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By increasing the temperature, the specific resistance of a conductor and a semiconductor:
- a)increases for both.
- b)decreases for both.
- c)increases for a conductor and decreases for a semiconductor.
- d)decreases for a conductor and increases for a semiconductor.
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
By increasing the temperature, the specific resistance of a conductor ...
Specific resistance of a conductor increases and for a semiconductor decreases with increase in temperature because for a conductor, a temperature:
coefficient of resistivity, a = + ve
and for a semiconductor, a = – ve
coefficient of resistivity, a = + ve
and for a semiconductor, a = – ve
Most Upvoted Answer
By increasing the temperature, the specific resistance of a conductor ...
Introduction:
The specific resistance of a material is a measure of how strongly it opposes the flow of electric current. It is denoted by the symbol ρ (rho) and is dependent on factors such as temperature, material composition, and impurities. In this question, we are asked to determine the effect of temperature on the specific resistance of a conductor and a semiconductor.
Effect of Temperature on Specific Resistance:
Conductor:
In a conductor, the specific resistance generally increases with temperature. This can be explained by the increase in the lattice vibrations of the conductor's atoms as the temperature rises. These lattice vibrations cause more frequent collisions between the electrons and the atoms, resulting in increased resistance to the flow of current.
Semiconductor:
In a semiconductor, the effect of temperature on specific resistance is opposite to that of a conductor. The specific resistance of a semiconductor usually decreases with an increase in temperature. This phenomenon can be attributed to the increase in the number of charge carriers (electrons and holes) with rising temperature. As the temperature increases, more electrons are excited from the valence band to the conduction band, thereby increasing the conductivity and reducing the specific resistance of the semiconductor.
Conclusion:
In summary, the specific resistance of a conductor increases with temperature, while that of a semiconductor decreases. This behavior is consistent with the physics of these materials and can be explained by considering factors such as lattice vibrations and the generation of additional charge carriers.
The specific resistance of a material is a measure of how strongly it opposes the flow of electric current. It is denoted by the symbol ρ (rho) and is dependent on factors such as temperature, material composition, and impurities. In this question, we are asked to determine the effect of temperature on the specific resistance of a conductor and a semiconductor.
Effect of Temperature on Specific Resistance:
Conductor:
In a conductor, the specific resistance generally increases with temperature. This can be explained by the increase in the lattice vibrations of the conductor's atoms as the temperature rises. These lattice vibrations cause more frequent collisions between the electrons and the atoms, resulting in increased resistance to the flow of current.
Semiconductor:
In a semiconductor, the effect of temperature on specific resistance is opposite to that of a conductor. The specific resistance of a semiconductor usually decreases with an increase in temperature. This phenomenon can be attributed to the increase in the number of charge carriers (electrons and holes) with rising temperature. As the temperature increases, more electrons are excited from the valence band to the conduction band, thereby increasing the conductivity and reducing the specific resistance of the semiconductor.
Conclusion:
In summary, the specific resistance of a conductor increases with temperature, while that of a semiconductor decreases. This behavior is consistent with the physics of these materials and can be explained by considering factors such as lattice vibrations and the generation of additional charge carriers.
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By increasing the temperature, the specific resistance of a conductor and a semiconductor:a)increases for both.b)decreases for both.c)increases for a conductor and decreases for a semiconductor.d)decreases for a conductor and increases for a semiconductor.Correct answer is option 'C'. Can you explain this answer?
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By increasing the temperature, the specific resistance of a conductor and a semiconductor:a)increases for both.b)decreases for both.c)increases for a conductor and decreases for a semiconductor.d)decreases for a conductor and increases for a semiconductor.Correct answer is option 'C'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about By increasing the temperature, the specific resistance of a conductor and a semiconductor:a)increases for both.b)decreases for both.c)increases for a conductor and decreases for a semiconductor.d)decreases for a conductor and increases for a semiconductor.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for By increasing the temperature, the specific resistance of a conductor and a semiconductor:a)increases for both.b)decreases for both.c)increases for a conductor and decreases for a semiconductor.d)decreases for a conductor and increases for a semiconductor.Correct answer is option 'C'. Can you explain this answer?.
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Solutions for By increasing the temperature, the specific resistance of a conductor and a semiconductor:a)increases for both.b)decreases for both.c)increases for a conductor and decreases for a semiconductor.d)decreases for a conductor and increases for a semiconductor.Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12.
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