You have four homogeneous wires made of the same material. Each wire has a diameter of 3 mm and a length of 0.9 m. When the four wires are connected in series, their combination has an equivalent resistance Req. You want to obtain this same equivalent resistance with a single wire made of the same material, but whose diameter is 1 mm. About how long should this single wire be? Group of answer choices 2.5 m The answer is not listed among the given choices 0.4 m 1.2 m 0.8 m

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