Regarding a semiconductor which one of the following is wrong?

Question

Regarding a semiconductor which one of the following is wrong? (A) There are no free electrons at room temperature (B) There are no free electrons at OK (C) The number of free electrons increases with rise of temperature (D) The charge carries are electrons and holes

Tardigrade Admin · Accepted Answer

The semiconductor, no covalent bond breaks at 0 K, so, no electron is free at 0 K . At room temperature some covalent bonds break, so, some electrons and holes become free. More covalent bonds break at high-temperature and so, number of free electrons increases at high temperature.

Q. Regarding a semiconductor which one of the following is wrong?

There are no free electrons at room temperature

There are no free electrons at OK

The number of free electrons increases with rise of temperature

The charge carries are electrons and holes

The semiconductor, no covalent bond breaks at $0 K$ , so, no electron is free at $0 K .$ At room temperature some covalent bonds break, so, some electrons and holes become free. More covalent bonds break at high-temperature and so, number of free electrons increases at high temperature.

Q. Regarding a semiconductor which one of the following is wrong?

There are no free electrons at room temperature

There are no free electrons at OK

The number of free electrons increases with rise of temperature

The charge carries are electrons and holes

The semiconductor, no covalent bond breaks at 0K, so, no electron is free at 0K. At room temperature some covalent bonds break, so, some electrons and holes become free. More covalent bonds break at high-temperature and so, number of free electrons increases at high temperature.

The semiconductor, no covalent bond breaks at $0 K$ , so, no electron is free at $0 K .$ At room temperature some covalent bonds break, so, some electrons and holes become free. More covalent bonds break at high-temperature and so, number of free electrons increases at high temperature.