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Find the Resistivity.If the length of the wire is 50 cm and the radius is 0.5mm, find the resistivity of wire if its resistance is 30 ohms.

Answer» RESISTANCE = RESISTIVITY * LENGTH / area
30 = (resistivity * 0.5) / (0.0005 * 0.0005 * 3.14)
30 = resistivity * 636943
resistivity = 4.7 * 10^-5 OHM m.


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