Q.

Which of the following is arranged in order of decreasing conductivity?

A. Copper, Aluminium, Steel, Silver
B. Aluminium, Silver, Copper, Steel
C. Copper, Silver, Aluminium, Steel
D. Silver, Copper, Aluminium, Steel
Answer» D. Silver, Copper, Aluminium, Steel
Explanation: Copper ; 9% less conductive than silver; aluminium is 10% less conductive than copper; while steel is the least conductive among the given options. The most electrically conductive metal is silver.
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