Units of Electric Charge

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Created by: Team Physics - Examples.com, Last Updated: April 25, 2024

Units of Electric Charge

What is Electric Charge?

Electric charge is a fundamental property of matter that determines how it interacts with electromagnetic fields. It comes in two types, positive and negative, and is measured in coulombs.

Like charges repel each other, while opposite charges attract. When charges are in motion, they produce an electric current, which can be harnessed for various purposes. Charge conservation states that the total electric charge in an isolated system remains constant over time, implying that charge cannot be created or destroyed, only transferred or redistributed between objects.

Electric charge formula

Electric charge (Q) = n x e

where ‘n’ represents the number of elementary charges (usually electrons or protons) and ‘e’ represents the elementary charge, which is approximately equal to 1.602 x 10^-19 coulombs.

SI units of Electric Charge

SI unit of electric charge : coulomb (C)

CGS units of Electric Charge

CGS (Centimeter-Gram-Second) unit of electric charge : statcoulomb (statC).

List of Units of Electric Charge

Faraday (chemical)F
Elementary chargee

Microcoulomb (μC): One microcoulomb is equal to one millionth of a coulomb (10^-6 C). It’s commonly used in measurements of small charges, such as those in electronics and biology.

Nanocoulomb (nC): One nanocoulomb is equal to one billionth of a coulomb (10^-9 C). Nanocoulombs are often used to measure very small electric charges in nanotechnology and semiconductor physics.

Picocoulomb (pC): One picocoulomb is equal to one trillionth of a coulomb (10^-12 C). This unit is used to quantify extremely small charges, such as those found in certain types of sensors and detectors.

Abcoulomb (abC): The abcoulomb is a unit of electric charge in the CGS system, equivalent to ten coulombs. While not commonly used, it’s occasionally encountered in older literature or specialized applications.

Franklin (Fr): Named after Benjamin Franklin, the franklin is an obsolete CGS unit of electric charge. One franklin is equal to the charge of approximately 3.33564 x 10^-10 coulombs.

Faraday (chemical): In electrochemistry, the faraday is a unit of electric charge representing the amount of charge carried by one mole of electrons. Its value is approximately 96,485.34 coulombs, often used in calculations involving electrolysis and chemical reactions.

Elementary charge (e): The elementary charge is the electric charge carried by a single proton or electron. Its value is approximately 1.602 x 10^-19 coulombs, and it serves as the fundamental unit of electric charge in particle physics and quantum mechanics.

Conversion of Units of Electric Charge

Conversion of Units of Electric Charge
From (Unit)To (Unit)Conversion Factor
Coulomb (C)Microcoulomb (μC)1 C = 1,000,000 μC
Coulomb (C)Nanocoulomb (nC)1 C = 1,000,000,000 nC
Coulomb (C)Picocoulomb (pC)1 C = 1,000,000,000,000 pC
Coulomb (C)Abcoulomb (abC)1 C = 0.1 abC
Coulomb (C)Franklin (Fr)1 C ≈ 3.33564 × 10^9 Fr
Coulomb (C)Faraday (F)1 C ≈ 0.0000104 F
Microcoulomb (μC)Coulomb (C)1 μC = 10^-6 C
Nanocoulomb (nC)Coulomb (C)1 nC = 10^-9 C
Picocoulomb (pC)Coulomb (C)1 pC = 10^-12 C
Abcoulomb (abC)Coulomb (C)1 abC = 10 C
Franklin (Fr)Coulomb (C)1 Fr ≈ 3.33564 × 10^-10 C
Faraday (F)Coulomb (C)1 F ≈ 96,485.34 C

From Coulomb (C) to Microcoulomb (μC)

Conversion Factor: 1 C = 1,000,000 μC

From Coulomb (C) to Nanocoulomb (nC)

Conversion Factor: 1 C = 1,000,000,000 nC

From Coulomb (C) to Picocoulomb (pC)

Conversion Factor: 1 C = 1,000,000,000,000 pC

From Coulomb (C) to Abcoulomb (abC)

Conversion Factor: 1 C = 0.1 abC

From Coulomb (C) to Franklin (Fr)

Conversion Factor: 1 C ≈ 3.33564 × 10^9 Fr

From Coulomb (C) to Faraday (F)

Conversion Factor: 1 C ≈ 0.0000104 F

From Microcoulomb (μC) to Coulomb (C)

Conversion Factor: 1 μC = 10^-6 C

From Nanocoulomb (nC) to Coulomb (C)

Conversion Factor: 1 nC = 10^-9 C

From Picocoulomb (pC) to Coulomb (C)

Conversion Factor: 1 pC = 10^-12 C

From Abcoulomb (abC) to Coulomb (C)

Conversion Factor: 1 abC = 10 C

From Franklin (Fr) to Coulomb (C)

Conversion Factor: 1 Fr ≈ 3.33564 × 10^-10 C

From Faraday (F) to Coulomb (C)

Conversion Factor: 1 F ≈ 96,485.34 C


How is electrical charge measured?

Electrical charge is measured using instruments such as electrometers or charge meters, which detect and quantify the amount of charge present on an object or in a system.

What is the unit of electric charge in eV?

The unit of electric charge in electron volts (eV) is typically used in particle physics, where 1 electron volt equals the charge of approximately 1.602 x 10^-19 coulombs.

What is the largest unit of charge?

The largest unit of charge is typically considered the Coulomb (C), which represents a significant accumulation of charge and is commonly used in practical applications of electromagnetism.

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