A thin circular wire carrying a current I has a magnetic moment M. The shape of the wire is changed to a square and it carries the same current. It will have a magnetic moment

Question

Infinity Learn · Accepted Answer

I$$π$$$$r2=M$$                       $$2$$$$π$$$$r=lM=I$$$$π$$$$l24$$$$π$$$$2=Il24$$π                         $$r=12$$$$π$$When it is made a square l $$=$$ $$4a$$.$$M1=Ia2=Il216$$                       $$a=14MM1$$ $$=Il2/4$$$$π$$$$Il2/16=164$$π$$=4$$$$π$$$$M1=$$π$$M4$$

A thin circular wire carrying a current I has a magnetic moment M. The shape of the wire is changed to a square and it carries the same current. It will have a magnetic moment

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