A 14 gauge copper wire of diameter 1.628 mmmm carries a current of 12.0 mAmA. copper=1.7210^8mcopper=1.7210^8m.

1. What is the potential difference across a 2.15 mm length of the wire?

Express answer in volts

2. What would the potential difference in part A be if the wire were silver instead of copper, but all else was the same? silver=1.4710^8msilver=1.4710^8m.

Express answer in volts