How much is the charge of an electron?

The charge of an electron is a fundamental physical constant and is negative. Its value is:
qe=−1.602×10−19 Cq_e = -1.602 \times 10^{-19} \, \text{C}
Explanation:
1. Magnitude: The magnitude of the charge is 1.602×10−19 C1.602 \times 10^{-19} \, \text{C}, where C\text{C} stands for coulombs, the SI unit of electric charge.
2. Sign: The charge of an electron is negative, indicating its role as a negatively charged particle in atoms.
This value is widely used in physics and chemistry, particularly in calculations involving atomic and subatomic particles, electric fields, and electromagnetic forces.