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The electromagnetic force developed in any physical system acts in such a direction as to tend to _____________

The electromagnetic force developed in any physical system acts in such a direction as to tend to _____________ Correct Answer increase the co-energy at constant mmf

fe = (∂Wfld1 (i,x))/∂x = (∂Wfld1 (F,x))/∂x, the positive sign before ∂Wfld1 indicates that force fe acts in a direction as to tend to increase the co-energy at constant mmf.

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