69. A wire 30 m long and 1 mm in radius is connected to a battery 5 V with a current of 30 A. Calculate the resistivity of the wire using the given data. a. 0.7 x 10^ - 82.m b. 1.7 x 108N m c. 2.9 x 10^ -8N. m d. 2.0 x 10^ -8N. m a b d.
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