[" Two circular coils "1" and "2" are ma...

[" Two circular coils "1" and "2" are made from the same "],[" wire but the radius of the "1" st coil is twice that of "],[" the "2^(" nd ")" coil.What is the ratio of potential difference "],[" applied across them so that the magnetic field at "],[" their centres is the same? "]

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[" Two circular coils "1" and "2" are made from the same "],[" wire but the radius of the "1" st coil is twice that of "],[" the "2^(" nd ")" coil.What is the ratio of potential difference "],[" applied across them so that the magnetic field at "],[" their centres is the same? "]

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