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Electrical conductance through metals is called electronic conductance, and it ______.
- a)decreases with an increase in temperature
- b)increases with increase in temperature
- c)decreases with a decrease in temperature
- d)does not depend on temperature
Correct answer is option 'A'. Can you explain this answer?
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Electrical conductance through metals is called electronic conductanc...
Explanation:
Effect of Temperature on Electronic Conductance:
- Electronic conductance refers to the ability of metals to conduct electricity through the movement of electrons.
- As the temperature of a metal increases, the kinetic energy of the electrons also increases.
- This increased kinetic energy results in more frequent collisions between electrons and atoms in the metal lattice.
- These collisions impede the flow of electrons, leading to a decrease in electronic conductance.
Ohm's Law and Temperature:
- According to Ohm's Law, the electrical conductance (G) of a material is inversely proportional to its resistance (R), given by the formula G = 1/R.
- The resistance of a metal increases with an increase in temperature due to the increased collisions between electrons and atoms.
- Therefore, the conductance (the inverse of resistance) decreases with an increase in temperature.
Consequences of Temperature on Conductance:
- The decrease in electronic conductance with an increase in temperature is a well-known phenomenon in the field of electrical engineering.
- Engineers and scientists take this effect into account when designing electronic devices and circuits to ensure optimal performance.
- Understanding the relationship between temperature and electronic conductance is crucial for various applications, including the design of efficient electrical systems.
Therefore, the correct answer to the question is option 'A', which states that electronic conductance decreases with an increase in temperature.
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Community Answer
Electrical conductance through metals is called electronic conductanc...
The correct answer fibersfiber decreases with an increase in temperature.
- With metals, there are plenty of mobile carriers, and the motion of the lattice atoms due to thermal energy causes them to interfere with the transport of mobile carriers through the lattice.
- With semiconductors, there are insufficient mobile carriers at low temperatures, and resistance is high.
- But as one heats the material, more and more of the lightly bound carriers escape and become free to conduct. It should be noted that once all the soon-to-be-mobile carriers in a semiconductor are fully activated, it then behaves like a 'metal,’ and further temperature increases will cause it to reduce conductivity.
Additional Information
The resistivity of metals typically increases as the temperature is increased, while the resistivity of semiconductors typically decreases as the temperature is increased.
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Electrical conductance through metals is called electronic conductance, and it ______.a)decreases with an increase in temperatureb)increases with increase in temperaturec)decreases with a decrease in temperatured)does not depend on temperatureCorrect answer is option 'A'. Can you explain this answer?
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