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Updated on 12th May, 2023 , 3 min read
The property of a unit of matter known as an electric charge defines how many more or fewer electrons than protons it has. Electric charge aids in measuring the process by which we may gauge the strength of an object's electric field. The idea of an electric charge was developed as a result of studying electrostatic events. The letter Q is used to represent an electrical charge, also known as an electrical charge or an electrostatic charge.
When put in an electromagnetic field, matter experiences a force due to its physical characteristic known as an electric charge. One might have a positive or negative electric charge (commonly carried by protons and electrons, respectively, by convention). Unlike charges attract one another, while like charges repel one another. Neutral refers to an item that has no net charge. Classical electrodynamics, the name given to an early understanding of how charged particles interact, is still true for issues that do not demand taking into account quantum phenomena.
The following table gives details about the electric charge formula-
Particulars |
Details |
Definition |
When a subatomic particle is exposed to an electromagnetic field, its electric charge causes it to feel a force. |
Symbol |
Q |
SI Unit |
Coulomb (C) |
Formula |
Q = I.t |
Other Units |
Faraday, Ampere-Hour |
The electric charge formula is as follows-
Where,
Q = Electric Charge
I = Electric Current
t = Time
The movement of electric charge through a material is known as electric current. Any of these charged particles moving around creates an electric current. When referring to the conventional current, it is often sufficient to say that it is carried by positive charges flowing in the conventional current's direction or by negative charges moving in the opposite direction. The electromagnetic principles and computations are approximated from a macroscopic perspective. The flow of electrons, the flow of electron holes, which behave like positive particles, and the flow of both negative and positive particles (ions or other charged particles) flowing in opposite directions in an electrolytic solution or a plasma are three examples of how an electric current can be carried.
Note: Be aware that the direction of conventional current in the common and significant case of metallic wires is the opposite of the drift velocity of the real charge carriers, i.e., the electrons. Beginners often get confused with this.
The SI unit of charge is known as the"coulomb," and it is named for the French scientist Charles-Augustin Coulomb. The meaning of one Coulomb is the amount of charge that one ampere of current can move in one second is measured in Coulombs. One Coulomb of charge contains around 6 × 10¹⁸ electrons.
Solution: Given,
I = 0.6 A
t = 37 s
Since,
Q = I × t
Q = 0.6 × 37
Therefore,
Q = 22.2 C
Solution:Q = I × t
Q = 200 × 180
Therefore,
Q = 36000 C
Solution: Given,
I = 150 mA = 150 × 10⁻³ A
t = 2 min = 2 × 60 = 120s
Since,
Q = I × t
Q = 150 × 10⁻³ × 120
Therefore,
Q = 18 C
Solution:Given,
I = 0.36 A
t = 15 min = 900 seconds
Q = I × t
= 0.36 × 900
= 324 C
Solution: Given,
n = 6 × 10⁴⁶ electrons
t = 20s
e = 1.6 × 10⁻¹⁹ C
Since,
Q = I × t
∴I = Q/t
By the current formula,
Q = ne
∴I = ne/t
I = 6 × 10⁴⁶ × 1.6 × 10⁻¹⁹ / 20
Therefore,
I = 4.8 × 10²⁶ A
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By - Nikita Parmar 2024-09-06 10:59:22 , 6 min readAns. When subatomic particles are exposed to an electric and magnetic field, their electric charge leads them to exert a force.
Ans. The amount of charge that is transported in one second is measured in coulombs.
Ans. The electric charge formula is Q = I x t.
Ans. The unit used to measure electric charge is the coulomb.
Ans. The two units of electric charge are Faraday and Ampere-Hour.