The right hand rule is the same as the left hand rule; the thumb is the direction of initial charge movement, the fingers are the direction of the field, and the palm is the direction of the acting fo...The right hand rule is the same as the left hand rule; the thumb is the direction of initial charge movement, the fingers are the direction of the field, and the palm is the direction of the acting force. The equation for the force on the wire is given as F=BIL, where B is the strength of the magnetic field, I is the current in amps and L is the length of the wire in and perpendicular to the field.