What is an electric dipole? Write its $SI$ unit.
(N/A) An electric dipole is a system of two equal and opposite point charges separated by a finite distance.
If $2a$ is the distance between two charges $q$ and $-q$,the dipole moment of this system is given by $\vec{p} = q(2\vec{a})$. Electric dipole moment is a vector quantity,and its direction is from the negative charge to the positive charge.
The $SI$ unit of electric dipole moment is $Cm$ (Coulomb-meter). Its dimensional formula is $[M^0 L^1 T^1 A^1]$.
The total charge of the dipole system is zero,but its electric field is non-zero because the two opposite charges are situated at different positions.
If $2a$ is the distance between two charges $q$ and $-q$,the dipole moment of this system is given by $\vec{p} = q(2\vec{a})$. Electric dipole moment is a vector quantity,and its direction is from the negative charge to the positive charge.
The $SI$ unit of electric dipole moment is $Cm$ (Coulomb-meter). Its dimensional formula is $[M^0 L^1 T^1 A^1]$.
The total charge of the dipole system is zero,but its electric field is non-zero because the two opposite charges are situated at different positions.
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