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Elementary Charge Conversion Table
This comprehensive elementary charge conversion table shows how various units relate to elementary charge. Use this reference for quick conversions between elementary charge and other common electric charge units.
| Conversion | To Unit | Multiplier |
|---|---|---|
| Elementary Charge to Coulombs | Coulombs | 1.602176634e-19 |
| Elementary Charge to Ampere-hours | Ampere-hours | 4.450492583e-23 |
| Elementary Charge to Milliampere-hours | Milliampere-hours | 4.450492583e-20 |
| Elementary Charge to Faradays | Faradays | 1.66053904e-24 |
| Elementary Charge to Statcoulombs | Statcoulombs | 4.80320444e-10 |
This elementary charge conversion reference table provides accurate conversion factors for both SI and CGS units. All values are based on internationally recognized standards for maximum precision in scientific and engineering applications.
What is Elementary Charge?
The elementary charge (symbol: e) is the electric charge carried by a single proton or, equivalently, the magnitude of the negative electric charge carried by a single electron. It is a fundamental physical constant with a value of exactly 1.602176634×10^-19 coulombs. This definition was established in 2019 when the International System of Units (SI) was redefined, fixing the value of the elementary charge.
The elementary charge is the smallest unit of electric charge found in nature and is fundamental to atomic physics and quantum mechanics. Our elementary charge conversion tool helps you easily convert between elementary charge and other units. For example, 1 coulomb equals approximately 6.242×10^18 elementary charges.
What is the SI of Elementary Charge?
The elementary charge is one of the defining constants of the International System of Units (SI). Since 2019, its value has been fixed at exactly 1.602176634×10^-19 coulombs. This definition makes the elementary charge essential for all electric charge conversions:
- Coulomb (C) = 6.241509074×10^18 elementary charges
- Ampere-hour (Ah) = 2.24694229×10^22 elementary charges
- Faraday (F) = 6.02214076×10^23 elementary charges (Avogadro's number)
What is Elementary Charge Used For?
Elementary charge is used in a wide range of applications across physics, chemistry, and electrical engineering. As a fundamental physical constant, it provides the basis for understanding electric charge at the atomic level. Our elementary charge conversion tool is essential for these applications:
Atomic Physics
Understanding electron behavior, atomic structure, and quantum mechanics. For example, calculating the charge of an ion with a deficit or excess of electrons.
Electrochemistry
Calculating the charge transfer in chemical reactions and battery operations. For example, determining how many electrons are involved in a redox reaction.
Electronics
Designing circuits and understanding current flow at the fundamental level. For example, quantifying the charge of a single electron in semiconductor devices.
Particle Physics
Studying fundamental particles and their interactions. For example, measuring the charge of quarks, which are fractions of the elementary charge.
Etymology and History
The concept of elementary charge emerged from the work of several scientists in the late 19th and early 20th centuries. Robert Millikan's oil-drop experiment (1909) was crucial in determining the value of the elementary charge. The term "elementary" refers to its fundamental nature as the smallest unit of electric charge in nature.
Before 2019, the elementary charge was determined experimentally. However, in the 2019 redefinition of SI base units, the value was fixed at exactly 1.602176634×10^-19 coulombs. This change, along with the redefinition of the kilogram, made the elementary charge one of the defining constants of the SI system, ensuring its value would remain constant for all time.
Frequently Asked Questions
Why is elementary charge important in physics?
The elementary charge is fundamental because it represents the smallest unit of electric charge found in nature. It is the basis for understanding all electric phenomena at the atomic and subatomic level. Its exact value (since 2019) also makes it a defining constant of the SI system, essential for all electric charge conversions.
How accurate is the elementary charge definition?
Since 2019, the elementary charge has been defined with infinite precision as exactly 1.602176634×10^-19 coulombs. This definition fixed the value rather than determining it experimentally, making it one of the most precisely defined physical constants. This precision is crucial for advanced scientific research and high-tech applications.
Can fractional charges exist?
In isolation, fractional electric charges have never been observed. However, in certain condensed matter systems like quarks (which have fractional charges of ±1/3e or ±2/3e), these charges are always confined within particles like protons and neutrons. Our elementary charge converter handles only whole elementary charges.
How do I convert elementary charge to other units?
Use our elementary charge conversion calculators above, or multiply by the appropriate conversion factor. For example, to convert elementary charge to coulombs, multiply by 1.602176634×10^-19. For detailed instructions on converting elementary charge to coulombs, visit our e to C converter. Our tool also handles conversions to ampere-hours and faradays with high precision.
What are common uses for elementary charge conversion?
Elementary charge conversion is essential in atomic physics (calculating ion charges), electrochemistry (determining electron transfer), electronics (understanding current at the quantum level), and particle physics (studying fundamental particles). Whether calculating battery capacity or understanding atomic structure, our elementary charge converter tool simplifies these complex tasks.
How does elementary charge relate to other charge units?
The elementary charge is the fundamental unit from which all other electric charge units are derived. One coulomb equals approximately 6.242×10^18 elementary charges. This relationship makes elementary charge conversion particularly straightforward compared to converting between unrelated units. Our converter handles all common electric charge units with precision.
Can I convert very small or very large measurements in elementary charges?
Yes, our elementary charge converter handles both extremely small and large measurements with precision. For microscopic work, you can convert single elementary charges. For macroscopic measurements, convert large numbers of elementary charges to coulombs or ampere-hours. Our smart rounding feature ensures readable results for all scales.
Is your elementary charge conversion tool free to use?
Yes, our elementary charge conversion calculator is completely free with no registration required. Simply enter your value, select your target unit, and get instant, accurate results. We believe precise measurement conversion should be accessible to everyone, from students learning physics to professionals working on advanced research projects.