Question

What is an electric dipole? Define electric dipole moment?

Answer 1

Electric Dipole :-

Electric dipole is define as the separation between two positive and negative charges. It means equal magnitude for some cause but the direction is opposite.So the charges may be +q & -q , and the distance by which it is separated is 2a. When the charges is connected in a same line then will be responsible for the dipole direction .

Magnitude of Dipole moment :-

Symbol of electric dipole is p , and distance d , then p = q× d(vector)

The magnitude d(vector) = 2a  $\boxed{p = 2qa }$

Electric Dipole Moment :-
It is define as the separation b/w +ve and -ve charges within a system. 
we can also that the product of magnitude of charge separated by a small distance . Also the SI unit of Dipole moment is Coulomb metre (Cm).


Direction of dipole moment :- The direction is -q to +q by joining the line. also the ipole in External Electric field is given by Torque 

τ(dipole)  = p(vector) × E(vector)



Hope it Helps :-)

Answer 2

$\huge\bold{Answer}$

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$<b>$Electric dipole - It is a system consist of two charges of equal magnitude but opposite charge seperated by small distance .

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Elecric dipole moment is defined as the product of either charge and distance between them.

Suppose +q and -q are two chrges in a system and the distance between the chrges is 2a

Then dipole moment is given by

q × 2a = dipole moment

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Unit of dipole moment is

Coulomb meter ( Cm)