why does the resistance of a metal vary with its temperature

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genius_generous answered 1 year ago

Q1) A metal wire has a resistance of 10.0 at a temperature of 20,0 °C. If...

Q1) A metal wire has a resistance of 10.0 at a temperature of 20,0 °C. If the same wire has a resistance of 12.0 at 90.0 °C, what is the resistance of this wire when its temperature is –40.0 °C? Q2) A parallel-plate capacitor filled with air carries a charge Q. The battery is disconnected, and a slab of material with dielectric constant k = 2 is inserted between the plates. Which of the following statements is true?

Why thermistor resistance, thermocouple voltage, platinum resistance are directly proportional to temperature?

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When adding heat to a substance at its phase transition temperature, why does the temperature of the substance not change? What is the energy used for?

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What are some reasons that business outputs vary? For example why does production output vary? Explain the difference between common causes of variation and special causes of variation.

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Tin (Sn) metal is a superconductor with a transition temperature of 3.7 K. Its properties are...

Tin (Sn) metal is a superconductor with a transition temperature of 3.7 K. Its properties are well described by the BCS theory. a. What is the zero temperature energy gap (in eV, not J) of Sn? b. The energy gap is the minimum energy required to break apart the Cooper pairs in a superconductor. If the breaking is done by photons what is the longest wavelength photons that can break the pairs? What is the frequency of those photons? 1...

Consider a dense electron gas in a given metal. What is the characteristic temperature? What does...

Consider a dense electron gas in a given metal. What is the characteristic temperature? What does this mean physically?

Ant on a metal plate. The temperature at a point ( x, y) on a metal...

Ant on a metal plate. The temperature at a point ( x, y) on a metal plate is T(x, y) = 4x2 - 4xy + y2 . An ant on the plate walks around the circle of radius 10 centered at the origin. a) What are the highest and lowest temperatures encountered by the ant? b) Suppose the ant has changed its trajectory and is walking around the circle of radius 5. Is the highest temperature encountered by the ant...

how does the annual temperature range depend on latitude? why does the annual temperature range depend...

how does the annual temperature range depend on latitude? why does the annual temperature range depend on latitude?

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