# Recent questions tagged torque-on-current-loop-and-magnetic-dipole

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### Two parallel wires carrying equal currents in the opposite directions are placed at $x = \pm$ a parallel to the $y$-axis with $z = 0$. Magnetic field at origin $O$ is $B1$ and at $P (2a,0,0)$ is $B2$. Then the ratio $\large\frac{B1}{B2}$ is

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