Respuesta :
Copper is used for different things in Cell Phones, such as in the mobile-phone circuit board as an electrical conductor, and for the speakers.
Use of Metals in Cell Phone
Our Cell Phone uses many different kinds of Metals and Non-Metals to provide us the multi-media services. The most common thing to be used in cell phones is aluminum alloys to make it resitant to chemical reactions. For the batteries, Lithium cobalt oxide and carbon graphite are used.
Copper and Silver, and to some extent Gold is used as wiring in the cell Phone. Copper is also used as the circuitry in the speakers. Therefore, the correct option is B.
Learn More about Copper here:
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