Question

Define the term dipole moment p vector of an electric dipole indicating it's direction.
Write it's S. I unit. An electric dipole is placed in a uniform electric field E vetcor .deduce the expression for the torque acting on it

Answer 1

The term electric dipole moment is defined as the product of one of the charges and distance of separation.

p=q*d
p-->Dipole moment
q-->One of the charges
d-->Distance of separation.

The SI unit is coloumb metre

In physics, Electric dipole moment is directed from negative charge to positive charge.

Torque on the electric dipole kept in an uniform electric field is the product of Dipole moment and electric field.

Torque = p*e