Electric field is force over test charge (Vector)
=================================================

Electric field at a point in space can be found by placing there a test charge and measuring
the electrostatic force that is applied to it.

**Links:**

#. `Wikipedia, last formula in paragraph <https://en.wikipedia.org/wiki/Electric_field#Electrostatics>`__.

.. py:currentmodule:: symplyphysics.laws.electricity.vector.electric_field_is_force_over_test_charge

.. py:data:: test_charge

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

Symbol:
    :code:`q_0`

Latex:
    :math:`q_{0}`

Dimension:
    :code:`charge`


.. py:function:: electric_field_law(electrostatic_force_)

    Electric field via electrostatic force.

    Law:
        :code:`E = F / q0`

    Latex:
        .. math::
            \vec E = \frac{\vec F}{q_0}

    :param electrostatic\_force\_: vector of electrostatic force

        Symbol: :code:`F`

        Latex: :math:`\vec F`

        Dimension: *force*

    :return: vector of electric field

        Symbol: :code:`E`

        Latex: :math:`\vec E`

        Dimension: *force* / *charge*


.. py:function:: electrostatic_force_law(electric_field_)

    Electrostatic force via electric field.

    Law:
        :code:`F = q0 * E`

    Latex:
        .. math::
            \vec F = q_0 \vec E

    :param electric\_field\_: vector of electric field

        Symbol: :code:`E`

        Latex: :math:`\vec E`

        Dimension: *force* / *charge*

    :return: vector of electrostatic force

        Symbol: :code:`F`

        Latex: :math:`\vec F`

        Dimension: *force*