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Two circular coils X and Y, having equal number of turns, carry equal currents in the same sense and subtend same solid angle at point O. If the smaller coil, X is midway between O and Y, then if we represent the magnetic induction due to bigger coil Y at O as BY and that due to smaller coil X at O as BX , then

a
b
c
d

detailed solution

Correct option is C

Magnetic field at O due to bigger coil Y, is    Magnetic field at O due to smaller coil X is

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