Question

Expound the temperature effect of the conductor and insulator.

Answer 1

Answer:

So, the conduction band becomes crowded and there will be more collision between the electrons which increases the resistance. So, with increase in temperature, the resistance... Resistance increases, in case of conductor, with increase in temperature and decreases, in case of insulator, due to increase in temperature.

Explanation:

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Answer 2

Answer:

Resistance increases, in the case of a conductor, with increase in temperature and decreases, in the case of an insulator, due to increase in temperature.

In the case of conductor, the valance band and conduction band overlap with each other. So, there are excess electrons in the conduction band of a conductor. When you increase the temperature, more electrons will go to the conduction band from the valance band by absorbing the energy. So, the conduction band becomes crowded and there will be more collision between the electrons which increases the resistance. So, with an increase in temperature, the resistance of conductor increases.

But in the case of an insulator, there is a large energy gap between the two bands. So, if the temperature rise is high, the electrons will go to the upper band. But since it is not crowded due to fewer electrons, so the conductance will increase due to the availability of free electrons in the conduction band. So, the resistance decreases with an increase in temperature in the insulator.

Explanation:

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