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A wire 4.16 m long and 7.34 mm in diameter has a resistance of 18.7 m2. A potential difference of 25.6 V is applied between the ends.
(a) What is the current in amperes in the wire? (b) What is the magnitude of the current density? (c) Calculate the resistivity of the
material of which the wire is made.
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(b) Number i
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