By what rule can you determine the direction of the Ampere force?

The direction of the Ampère force is determined according to the left hand rule: if the left hand is positioned so that the perpendicular component of the magnetic induction vector B enters the palm, and the four outstretched fingers are directed in the direction of the current, then the thumb bent 90 degrees will show the direction of the force acting on the segment conductor with current, that is, the Ampere force.

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