Temperature Dependence of Resistivity

The conductivity of a material varies with temperature for (i) semiconductors and (ii) good conductors as

Which one of the following is the primary reasons for increase in resistivity of a conducting material due to temperature?

What is the difference between a good conductor and a good insulator?

How resistivity varies with temperature for semiconductor insulator and conductor?

Do insulators have resistivity?

What is the effect of temperature on the resistivity of a conductor?

How does resistivity of insulators relate to temperature?

The positive temperature coefficient of resistance is for;

Give an example of a material each for which temperature coefficient of resistivity is (1) positive (2) Negative

Why temperature coefficient of resistance of conductor is positive?

Which of the following materials offer a low-temperature coefficient of resistance.

Thermistors have __________

The temperature coefficient of resistance of a semiconductor

Consider the statements A and B in the previous question. Peltier effect is caused

A conducting resistance is connected to a battery. The temperature of the conductor decreases due to cooling. The current flowing through the resistance will -

A piece of Gold (Au) and Germanium (Ge) are cooled from room temperature to 77 K. Then the resistance of

A wire of Aluminium and a wire of Germanium are cooled to a temperature of ${77}^{o}K$ . Then

Assertion: With increase in temperature, resistance of a conducting wire increases.

Reason: With the increase in temperature, the length and area of cross-section of wire changes but resistivity remains constant.

Assertion: Material used in the construction of a standard resistance is Constantan or Manganin.

Reason: The temperature coefficient the resistances is very small.

Assertion: Resistivity of conductors and semiconductors increase with temperature.

Reason: The electrons move with more kinetic energy and hence relaxation time decreases.