Charge is constant
==================

The total charge of any isolated system is conserved.

**Conditions:**

#. The system is isolated, i.e. no particles can leave it.

**Links:**

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

.. py:currentmodule:: symplyphysics.laws.conservation.charge_is_constant

.. py:data:: time

    :attr:`~symplyphysics.symbols.basic.time`.

Symbol:
    :code:`t`

Latex:
    :math:`t`

Dimension:
    :code:`time`


.. py:data:: total_charge

    :attr:`~symplyphysics.symbols.electrodynamics.charge` as a function of :attr:`~time`.

Symbol:
    :code:`q(t)`

Latex:
    :math:`q{\left(t \right)}`

Dimension:
    :code:`charge`


.. py:data:: law

    :code:`Derivative(q(t), t) = 0`


    Latex:
        .. math::
            \frac{d}{d t} q{\left(t \right)} = 0