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1) Number of charges
Q = n e
WHERE :
Q = Number of charges
n = Number of electrons
e = Charge of an electron
NOTE: The charge of an electron is 1.6 * 10 ^ (- 19) C.
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2) Coulomb`s Law
WHERE :
F = Force of charges
Q(1) and Q(2) = Charges
r = Distance between charges
Є = Permittivity
NOTE: Є is a constant that depends on the media being charged and its value varies from media to media. In Free space , the value of Є is 8.85 * 10 ^ (- 12). In Free space , the value of 1/4ЛЄ is 9 * 10^9.
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3) Relative Permittivity
WHERE :
k = Relative Permittivity
Є(0) = Permittivity of Free space
Є = Permittivity of In Some medium
NOTE: Relative Permittivity is the ratio of the Permittivity of a media space to the Permittivity of a free space.
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4) Force of a Charged particle
WHERE :
F = Force of a charged particle
(E ) ⃗ = Electrical Field intensity
q = Attribution of the placed object
NOTE: When the charge is positive, the force is in the direction of the field. When charged (-) the force reverses the direction of the field.
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5) Point electric field intensity
WHERE :
Q = Charge of particle
(E ) ⃗ = Point Electrical Field intensity
r = Distance between point and particle
ϵ = Permittivity
NOTE: It mainly considers the electric field intensity induced by a point charge.
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6) Electrical potential energy
E = V q
WHERE :
E = Electrical potential energy
V = Electric potential
q = Attached charge
NOTE: The principles of energy conservation, work and energy can be applied in the event of a change in the position of a charge in an electric field.
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7) Electric potential
WHERE :
Q = Charge of particle
V = Electric potential
r = Distance between point and particle
ϵ = Permittivity
NOTE: Electric potential is not a vector. The electric potential of a point charge is considered here.
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8) Linear charge density
WHERE :
λ = Linear charge density
Q = Total charge
L = Total length
NOTE: Depending on the shape of the geometric object, the position of the object is different.
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9) Surface charge density
WHERE :
σ = Surface charge density
Q = Total charge
A = Total Area
NOTE: Depending on the shape of the geometric object, the position of the object is different.
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10) Volume charge density
WHERE :
ρ = Volume charge density
Q = Total charge
V = Total Area
NOTE: Depending on the shape of the geometric object, the position of the object is different.
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11) Gauss' theorem
WHERE :
ϕ = Electric flux
q = Magnitude of the charge
ε = Permittivity
NOTE: The Gauss Theorem can be considered as a contribution to search for the electric field density.
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12) Relation between Electric flux
and Electric field intensity
WHERE :
E ⃗ = Electric field intensity
A = Area
ϕ = Electric flux
NOTE: Problems are solved by substituting Gauss's theorem and area.
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