Usually it is the negative charge that is transferred when two bodies are rubbed together. Can you explain why?

Explanation

### Step-by-Step Solution:

1. **Understanding Charge Transfer**: When two bodies are rubbed together, they can become electrically charged due to the transfer of electrons. This process is known as triboelectric charging.

2. **Nature of Electrons**: Electrons are subatomic particles that carry a negative charge. They are much lighter than protons and are located in the outer regions of atoms.

3. **Binding of Electrons**: Electrons are not tightly bound to the nucleus of an atom. This means that they can be easily removed from one atom and transferred to another atom when two materials are in contact and then separated.

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