Question: A long thin cylindrical rod made of paramagnetic with magnetic susceptibility % and having a cross-sectional area S is located along the axis of a

A long thin cylindrical rod made of paramagnetic with magnetic susceptibility % and having a cross-sectional area S is located along the axis of a current-carrying coil. One end of the rod is located at the coil centre where the magnetic induction is equal to B whereas the other end is located in the region where the magnetic field is practically absent. What is the force that the coil exerts on the rod?

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