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There is a potential difference of 1.1 v between the ends of a 10 cm long graphite rod that has a cross-sectional area of 0.90 mm^2. the resistivity of graphite is 7.5 x 10^-6 ω-m. (a) find the resistance of the rod.
(b) find the current.
(c) find the electric field inside the rod.
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