A dipole with electric torque p is located at a distance r from a very long string that is charged with a uniform linear density λ . Find the force f on the dipole if the direction of the vector p A) be in the direction of cement B) is in line with the radial vector r.

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A dipole with electric torque p is located at a distance r from a very long string that is charged with a uniform linear density λ . Find the force f on the dipole if the direction of the vector p
A) be in the direction of cement
B) is in line with the radial vector r.

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