Two wires are identical except that one is silver
Two wires are identical, except that one is silver (resistivity = 1.59×10-8 ?·m) and the other is platinum (resistivity = 1.06×10-7 ?·m). The silver wire has resistance of 1.56 m?. What is the resistance of the platinum wire?
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two wires are identical except that one is silver resistivity 159times10-8 middotm and the other is platinum
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a vacuum cleaner is connected to a 120v socket and uses 30 a when the back emf generated by the electric motor is 72
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