Two circular coils X and Y have the equal number of turns and carry equal currents in the same sense and subtend same solid angle at the 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 : By/Bx=???
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By/Bc=1/2
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