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[" A long straight wire of resistance "R...

[" A long straight wire of resistance "R" ,radius' "],[" and length "I'carries a constant current "I'.Th "],[" poynting vector for the wire will be- "],[[" 1) "(1R)/(2 pi al)," 2) "(IR^(2))/(" al ")," 3) "(L^(2)R)/(" al ")," 4) "(I^(2)R)/(2 pi al)]]

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