Drift velocity of charge carriers
=================================

Drift velocity is the average velocity attained by charged particles, such as electrons,
in a material due to an electric field. In general, an electron in a conductor will
propagate randomly at the Fermi velocity, resulting in an average velocity of zero.
Applying an electric field adds to this random motion a small net flow in one direction;
this is the drift.

**Links:**

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

.. py:currentmodule:: symplyphysics.laws.condensed_matter.drift_velocity_of_charge_carriers

.. py:data:: drift_velocity

    :attr:`~symplyphysics.symbols.chemistry.drift_velocity` of charge carriers.

Symbol:
    :code:`u`

Latex:
    :math:`u`

Dimension:
    :code:`velocity`


.. py:data:: mobility

    :attr:`~symplyphysics.symbols.chemistry.mobility` of charge carriers.

Symbol:
    :code:`mu`

Latex:
    :math:`\mu`

Dimension:
    :code:`area/(time*voltage)`


.. py:data:: electric_field_strength

    :attr:`~symplyphysics.symbols.electrodynamics.electric_field_strength`.

Symbol:
    :code:`E`

Latex:
    :math:`E`

Dimension:
    :code:`voltage/length`


.. py:data:: law

    :code:`u = mu * E`


    Latex:
        .. math::
            u = \mu E