Electric dipole moment is charge times displacement
===================================================

The vector of electric dipole moment is a vector whose magnitude describes the
:ref:`electric dipole moment <Electric dipole moment is charge times distance>`
of the system. It is collinear to the vector connecting the two point charges.

**Notes:**

#. This law can be seen as the definition of electric dipole moment.

**Conditions:**

#. The charges must be equal by magnitude and have opposite signs.

**Links:**

#. `Wikipedia <https://en.wikipedia.org/wiki/Electric_dipole_moment#Elementary_definition>`__.

.. py:currentmodule:: symplyphysics.electromagnetism.electrostatics.electric_dipole.electric_dipole_moment_is_charge_times_displacement

.. py:data:: electric_dipole_moment

    Vector of :attr:`~symplyphysics.symbols.electrodynamics.electric_dipole_moment`.

Symbol:
    :code:`p`

Latex:
    :math:`{\vec p}`

Dimension:
    :code:`charge*length`


.. py:data:: charge

    Magnitude of the electric :attr:`~symplyphysics.symbols.electrodynamics.charge` of the point charges.

Symbol:
    :code:`q`

Latex:
    :math:`q`

Dimension:
    :code:`charge`


.. py:data:: displacement

    Position vector pointing from the *negative* charge to the *positive* charge. See
    :attr:`~symplyphysics.symbols.classical_mechanics.distance`.

Symbol:
    :code:`d`

Latex:
    :math:`{\vec d}`

Dimension:
    :code:`length`


.. py:data:: law

    :code:`p = q * d`


    Latex:
        .. math::
            {\vec p} = q {\vec d}