Why Rhodium?

Conductivity of different mEtals....

https://www.effectrode.com/knowledge-base/conductivity-of-metals-sorted-by-resistivity/

As you can see rhodium is not a good conductor, but it is relatively affordable and it is tough and looks shiney

Regards

Um, rhodium is the most expensive commodity precious metal.

Give me bare copper every time.

Granted, it’s more expensive than gold per troy ounce.

However the thickness of the rhodium plating tends to be much thinner than gold plated parts, making it more affordable than gold.

Silver is still the best from a conductivity perspective but prone to wear and tarnishing

Regards