A wire of fixed total length is initially bent into one circular loop of radius R. It is then rewound into N identical closely packed circular turns. Neglect wire thickness. What is the radius of each new turn?

Physics · Magnetic effect of current · biot savart law and magnetic field due to straight conductor ,arc and ring

JEE MainsNEET

A wire of fixed total length is initially bent into one circular loop of radius R. It is then rewound into N identical closely packed circular turns. Neglect wire thickness. What is the radius of each new turn?

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