🔍 Key Concepts

• Electrical conductivity ranking of common metals • Metals used as standard conductors in wiring and electronics • Difference between excellent, good, and moderate conductors

💭 Think About

• Which metal is widely known and accepted as the best conductor of electricity in physics and engineering references? • After the very best conductor, which two common wiring metals usually come next before getting into cheaper, less efficient conductors? • Look at each option and ask: does the sequence go from highest conductivity down to lower conductivity without jumping backwards?

✅ Before You Answer

• Identify which one metal is universally listed as #1 in conductivity and be sure it appears first in the list you choose. • Check that copper appears before any clearly poorer conductors like zinc or aluminum. • Verify that the order never improves again after it gets worse (conductivity should go high → lower → lower → lower in a smooth progression).