23. when an electron is displaced in a semiconductor, the hole that's left behind is

A. attracted to the negative terminal of the voltage source

B. incapable of carrying a charge.

C.attracted to the anode of the voltage source.

D. considered an impurity in the crystal

To determine the answer to this question, we need to understand the behavior of electrons and holes in a semiconductor material.

In a semiconductor, such as silicon or germanium, the atoms are arranged in a crystalline structure. This structure contains a balance between electrons, which are negatively charged particles, and positively charged atomic nuclei.

When an electron is displaced from its original position within the semiconductor, a positively charged "hole" is left behind. This hole can be thought of as an area where there is a lack of an electron.

Now, let's consider the options provided:

A. Attracted to the negative terminal of the voltage source: This statement is incorrect. In a semiconductor, the voltage source does not play a role in attracting or repelling holes.

B. Incapable of carrying a charge: This statement is also incorrect. In fact, the movement of holes in a semiconductor contributes to the flow of electric current.

C. Attracted to the anode of the voltage source: This statement is not generally true. The movement of holes is governed by electric fields within the semiconductor, not specifically the anode of a voltage source.

D. Considered an impurity in the crystal: This statement is incorrect. Holes are not considered impurities in a crystal. They are a result of the movement of electrons and are a fundamental aspect of how a semiconductor operates.

Based on the explanations provided, we can conclude that option B is incorrect and the correct answer is C.