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Question

We use copper in our electrical wires because copper is a great conductor.

Silver is a better conductor. Why don't we make all of our wires out of silver?

Your answer

Answer

Silver is more expensive than copper, so it is not cost-effective to use silver for all of our electrical wires.

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Copper is a great conductor of electricity, and it is also much more cost-effective than silver, which is a better conductor. Therefore, it is...