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Copper has been used in wires since the invention of the electromagnet and the telegraph in the 1820s. [1] [2] The invention of the telephone in 1876 further fueled the need for copper wire as an electrical conductor. [3]Copper is an electrical conductor in many classes of wire. [3][4] Copper wire i
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Copper and aluminium are most frequently used as the electrical conductors in electrical cables due to their low resistance and excellent conductivity.
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