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[" A steady current "flows in a small sq...

[" A steady current "flows in a small square loop of wire of side L in a horizontal plane.The loop is now "],[" folded about its middle such that half of it lies in a vertical plane.Let "vec mu_(1)" and "vec mu_(2)" respectively denote the "],[" magnetic moments of the current loop before and after folding.Then: "],[[" (1) "vec mu_(2)=0," (2) "vec mu_(1)" and "vec mu_(2)" are in the same direction "],[(3)(|vec mu_(1)|)/(|vec mu_(2)|)=sqrt(2)," (4) "(|vec mu_(1)|)/(|vec mu_(2)|)=(1)/(sqrt(2))]]

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