The Left Hand Rule( for motors) shows what happens when charged particles (such as electrons in a current) enter a magnetic field. This rule is also called Fleming’s Left Hand Rule, after English electronics pioneer John Ambrose Fleming. First finger represents the direction of the Field. The Second finger represents the direction of the Current [conventional current, positive(+) to negative(-). The Thumb represents the direction of the Thrust or resultant Motion. The Right Hand Rule simply shows how a current-carrying wire generates a magnetic field.