Electric field due to point charge
==================================

The strength of the electric field set up by a point charge is linearly proportional
to the value of the charge and the square inverse of the distance to it.

**Notation:**

#. :math:`\varepsilon_0` (:code:`epsilon_0`) is :attr:`~symplyphysics.quantities.vacuum_permittivity`.

**Links:**

#. `Wikipedia <https://en.wikipedia.org/wiki/Electric_field#Electrostatics>`__.

.. py:currentmodule:: symplyphysics.laws.electricity.electric_field_due_to_point_charge

.. py:data:: electric_field_strength

    :attr:`~symplyphysics.symbols.electrodynamics.electric_field_strength` due to point charge :math:`q`.

Symbol:
    :code:`E`

Latex:
    :math:`E`

Dimension:
    :code:`voltage/length`


.. py:data:: charge

    Value of the point :attr:`~symplyphysics.symbols.electrodynamics.charge`.

Symbol:
    :code:`q`

Latex:
    :math:`q`

Dimension:
    :code:`charge`


.. py:data:: distance

    :attr:`~symplyphysics.symbols.classical_mechanics.euclidean_distance` to the charge.

Symbol:
    :code:`d`

Latex:
    :math:`d`

Dimension:
    :code:`length`


.. py:data:: law

    :code:`E = q / d^2 / (4 * pi * epsilon_0)`


    Latex:
        .. math::
            E = \frac{1}{4 \pi \varepsilon_0} \frac{q}{d^{2}}