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List of Physics Formula Formula Chapter 1 Physics Class 12 NCERT Solutions Formula Chapter 1 Electric Charges and

List of Physics Formula chapter 1 can study by students of class 12. These definitiona and formulas of Class 12 Physics Chapter 1: Electric Charges and Fields is developed and witten by our expert teachers. Physics formulas. List of Physics Formula is prepapred and collected from varius resources to help the students.

Physics Formula - 1
Apply Coulomb’s law

Coulomb’s law
q1 = first charge
q2 = Second charge
r = distance between both charge
ε0= permittivity of free space
1/4πε0  = 9 x 109 Nm2C-2

Physics Formula - 2
Coulomb’s force law between two point charges q1 and q2 located at r1 and r2 is then expressed as
Coulomb’s force law between two point charges q<sub>1</sub> and q<sub>2</sub> located at r<sub>1</sub> and r<sub>2</sub> is then expressed as
Physics Formula - 3

Thus the total force F1 on q1 due to the two charges q2 and q3 is given as
total force F1 on q<sub>1</sub> due to the two charges q<sub>2</sub> and q3 is given as
Physics Formula - 4

Resultant force
Resultant force
Physics Formula - 5

The electric field produced by the charge Q at a point r is given as
The electric field produced by the charge Q at a point r
Physics Formula - 6

Force F exerted by a charge Q on a charge q
Force F exerted by a charge Q on a charge q
Physics Formula -  7

The electric field E at r due to the system of charges is
The electric field E at r due to the system of charges
Physics Formula - 8

The total flux φ through a surface S is
φ ≈  Σ E.ΔS
Physics Formula - 9
the electric field of a dipole at large distances takes simple forms:
At a point on the dipole axis
The total flux φ through a surface S
At a point on the equatorial plane
At a point on the dipole axis
Physics Formula - 10
Surface charge density σ at the area element by
At a point on the equatorial plane
Physics Formula - 1 1
The linear charge density of a wire is defined by
Surface charge density σ at the area element
Physics Formula - 1 2
The volume charge density (sometimes simply called charge density) is defined as
The linear charge density of a wire is defined by
Physics Formula - 1 3
Electric field due to the charge ρΔV is given by Coulomb’s law:
The volume charge density (sometimes simply called charge density)
Physics Formula - 1 4
The total electric field due to the charge  distribution is obtained by summing over electric fields due to different volume elements:
Electric field due to the charge ρΔV is given by Coulomb’s law
Physics Formula - 1 5
Total flux through a sphere of radius r, which encloses a point charge q at its centre.
The total electric field due to the charge  distribution is obtained by summing over electric fields due to different volume elements
Physics Formula - 1 6
Electric flux through a closed surface S
∆ φ1 = q/ε0
Physics Formula - 1 7
Flux through the Gaussian surface
Total flux through a sphere of radius r, which encloses a point charge q at its centre.
Physics Formula - 1 8
Field due to a uniformly charged infinite plane sheet
Electric flux through a closed surface S
n is a unit vector normal to the plane and going away from it
Physics Formula - 1 9
Field outside the shell
Flux through the Gaussian surface
Field due to a uniformly charged infinite plane sheet
E=0

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