adding test to electronics/electric_power.py (#12387)

* test electric_power

* Update electric_power.py

* Update electric_power.py

* Update electric_power.py

* Update electric_power.py

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Co-authored-by: Julia <julia.de-jesus-aragao@imt-atlantique.net>
Co-authored-by: Maxim Smolskiy <mithridatus@mail.ru>