It’s not the conductivity that causes us to use gold plated contacts, it’s that gold doesn’t tarnish. Silver is more conductive than copper, but it’s only a fe

It’s not the conductivity that causes us to use gold plated contacts, it’s that gold doesn’t tarnish. Silver is more conductive than copper, but it’s only a few percent. For most applications it’s cheaper to just use a fatter copper wire than to use silver.