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A small current-carrying coil having a ...

A small current-carrying coil having a megantic moment `p_(m)` is located at the axis of a round loop of radius `R` with current `I` flowing thorough it. Find the magnitude of the vector force applied to the coil if its distance from the centre of the loop is equal to `x` and the vector `p_(m)` coincides in direction with the axis of the loop.

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