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[" 6.A "250" -turn rectangular coil of l...

[" 6.A "250" -turn rectangular coil of length "2.1" cm and width "],[1.25cm" carries a current of "85 mu A" and subjected to a "],[" magnetic field of strength "0.85T" .Work done for "],[" rotating the coil by "180^(@)" against the torque is "],[[" (a) "9,1 mu J," (b) "4.55 mu J," (c) "2.3 mu J," (d) "1.5 mu s]]

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