Tag: Electrostatics

$$\Delta \phi = \vec{E}.\Delta S$$

If two equal and opposite charges +q and -q are separated by a distance 2d, then this arrangement is called electric dipole.

Electric flux ( φ ) through a closed surface (S) enclosing the total charge (q) is given by,

$$\phi = \frac{q}{\epsilon_0}$$

That is is the Gauss’s law.

The force per unit charge that would be exerted on a test charge is called electric field.

The force on a test charge Q due to a single point charge q is given by coulomb’s law $$\vec{F} = \frac{1}{4\pi \epsilon_0 } \frac{Qq}{r^2} \hat{r}$$ Where r is the distance between Q and q and ε₀ is the permitivity of the free space.

Charge is the properties of matter. According to Benjamin franklin there are two types of charge, (1) Positive charge and (2) Negative charge.
Electric charge is a scalar quantity.
In SI System, the unit of Electric charge is Coulomb.
The dimensional formula of Electric charge is [ M⁰L⁰T¹A¹ ]