What is the smallest radius of copper wire

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Reference no: EM13250461

A portable electric heater uses 22 A of current. The manufacturer recommends that an extension cord attached to the heater receive no more than 2.2 W of power per meter of length. What is the smallest radius of copper wire that can be used in the extension cord? (Note: An extension cord contains two wires.)

Reference no: EM13250461

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