Question

Which material is a best conductor?

• A. silver
• B. porcelain
• C. rubber
• D. gold

Answer 1

The correct option is A silver

Out of silver, porcelain, rubber, and gold; porcelain and rubber are non-metals i.e. insulators. So

Now out of silver and gold conductivity of silver ($62.1\times {10}^{6}siemens/m$) is more than that of gold ($44.2\times {10}^{6}siemens/m$)