Commonly used conducting materials are_____________?
Correct answer: C. both (A) and (B)
- A. copper
- B. aluminium
- C. both (A) and (B)
- D. copper and silver
- E. platinum and gold
Explanation
Copper and aluminium are the most commonly used conducting materials because they combine good conductivity with practical cost and availability. Silver conducts better but is too expensive for most ordinary applications.
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