Energy via constant power and time
==================================

When power is constant, energy can be expressed as a product of power and time.

**Conditions:**

#. Power is constant, i.e. :math:`\frac{d P}{d t} = 0`.

**Links:**

#. `Wikipedia <https://en.wikipedia.org/wiki/Power_(physics)#Average_power_and_instantaneous_power>`__.

..
    TODO Move to another folder? this law is not exclusive to electrodynamics

.. py:currentmodule:: symplyphysics.laws.electricity.energy_via_constant_power_and_time

.. py:data:: energy

    :attr:`~symplyphysics.symbols.basic.energy` consumed or released during time :math:`t`.

Symbol:
    :code:`E`

Latex:
    :math:`E`

Dimension:
    :code:`energy`


.. py:data:: power

    Constant :attr:`~symplyphysics.symbols.basic.power`.

Symbol:
    :code:`P`

Latex:
    :math:`P`

Dimension:
    :code:`power`


.. py:data:: time

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

Symbol:
    :code:`t`

Latex:
    :math:`t`

Dimension:
    :code:`time`


.. py:data:: law

    :code:`E = P * t`


    Latex:
        .. math::
            E = P t