There are 6.25 × 10¹⁸ electrons in One-Coulomb Charge.
Calculation and Explanation:
The charge on a single electron is 1.602 × 10⁻¹⁹ C.
How to calculate the number of electrons in 1 C of charge?
- Number of electrons = Total charge / Charge per electron
- Number of electrons = 1 / (1.602 × 10⁻¹⁹)
- Number of electrons = 6.25 × 10¹⁸ electrons
Key Points
- Definition of Coulomb:
A coulomb is the standard unit of electric charge and represents an excess or deficit of 6.25 × 10¹⁸ electrons. - Relationship Between Charge and Particles:
Total charge (Q) = Number of electrons (N) × Charge per electron (e). - Charges on Fundamental Particles:
- Electron: Negative charge (-1.602 × 10⁻¹⁹ C)
- Proton: Positive charge (+1.602 × 10⁻¹⁹ C)
- Neutron: No charge
- Additional Information:
- Electrons are fundamental particles with a charge of -1.
- Protons and neutrons in the nucleus have equal but opposite charges to electrons or no charge.
Practical Implications
Understanding the relationship between charge and the number of electrons is crucial for electrical circuit analysis, chemistry, and atomic physics. For instance:
- In Electrical Circuits: This knowledge helps engineers design and analyze circuits by quantifying how electrons flow through conductive materials.
- In Chemistry: The electron transfer between atoms during reactions (e.g., oxidation and reduction) is quantified using charge principles.
- In Atomic Physics: Understanding how charges interact at the atomic level allows scientists to study phenomena like ionization and electron excitation.
This foundational concept bridges microscopic atomic behaviors and macroscopic electrical phenomena, forming the basis for advancements in modern technology and scientific research.
