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A 5.78 cm long rod in the shape of a rectangular solid has cross section dimensions 28.7 mm x 42.6 mm. The material of which the block is made has 5.95 x 10^28 conduction electrons per cubic meter and conductivity = 1.28 x 10^7 (Ohm-meter)^-1 . A potential difference of 15.0 mV is maintained between its ends. What is the current in the block? Put your answer in the form of "a.bc A".

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