In free space, the charge carriers will be 0.

Charge carriers are particles that carry electric charge. In materials, charge carriers can be either electrons (in conductors and semiconductors) or ions (in electrolytes). However, in free space, there are no charge carriers.

Explanation:

1. Definition of free space:
Free space, also known as vacuum or empty space, refers to an area devoid of any matter or particles. In other words, it is a region with no atoms, molecules, or particles present.

2. Charge carriers in materials:
In conductors, such as metals, charge carriers are primarily electrons. These electrons are loosely bound to their respective atoms, allowing them to move freely throughout the material when an electric field is applied. This is why conductors are good at conducting electricity.

In semiconductors, both electrons and electron holes can act as charge carriers. Electron holes are created when an electron is removed from its position, leaving behind a positively charged vacancy. The movement of both electrons and electron holes contributes to the conduction of electricity in semiconductors.

In electrolytes, charge carriers are ions. These ions can be either positively charged (cations) or negatively charged (anions). The movement of ions in an electrolyte allows for the conduction of electric current.

3. Lack of charge carriers in free space:
In free space, there are no atoms, molecules, or particles present to serve as charge carriers. As a result, there are no free electrons, electron holes, or ions that can move to carry an electric charge. Therefore, the number of charge carriers in free space is 0.

Conclusion:
In free space, the charge carriers are 0 since there are no atoms, molecules, or particles present to carry electric charge. This is in contrast to conductors, semiconductors, and electrolytes, where charge carriers are present and contribute to the conduction of electricity.