Created equivalent_resistance under Electronics (#6782)

* Create resistor_equivalence.py

* Update resistor_equivalence.py

* Update electronics/resistor_equivalence.py

removed an unnecessary space

Co-authored-by: Caeden <caedenperelliharris@gmail.com>

* Update resistor_equivalence.py

fixed the snake_case requirement

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* Update resistor_equivalence.py

finalize the naming convention errors (hopefully)

* Update resistor_equivalence.py

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Co-authored-by: Caeden <caedenperelliharris@gmail.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Christian Clauss <cclauss@me.com>