Fleming's Left-Hand Rule

Fleming's Left-Hand Rule is used to determine the direction of force acting on a current-carrying conductor placed in a magnetic field. According to this rule, if the middle finger, forefinger, and thumb of the left hand are at right angles to one another and if the middle finger and forefinger represent the direction of current and magnetic field respectively, then the thumb will indicate the direction of force acting on the conductor.

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The rule is used to determine the direction of motion of a conductor (rotor) in the magnetic field produced by the stator for a motor.

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