Can electric flux be a negative number?

Explanation

To determine whether electric flux can be a negative number, we can analyze the concept of electric flux and its relation to electric fields and charges.

### Step-by-Step Solution:

1. **Understanding Electric Flux**:
Electric flux (Φ_E) through a surface is defined as the product of the electric field (E) and the area (A) through which it passes, and is given by the formula:
\[
Φ_E = E \cdot A \cdot \cos(\theta)
...