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Questions  >>  JEEMAIN and NEET  >>  NEET PAST PAPERS  >>  2006
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Q)

Two circular coil 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 potential difference in volts should be applied across them so that the magnetic field at their centres is the same-


( A ) 6
( B ) 3
( C ) 4
( D ) 2

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