Fleming's right-hand rule

Force or motion of conductor, magnetic field, and current are perpendicular to each other(at a 90 degree)

Fleming's right-hand rule is the most convenient and easy way to find the directions of motion of conductor, induced current and magnetic field. The basic purpose of this rule is to find the direction of induced current when the conductor moves in a magnetic field. Fleming's right-hand rule applies to electric generators. Directions can be found by using our right hand with the thumb, forefinger, and middle finger.  According to Faraday’s law of electromagnetic induction. When a conductor such as a wire attached to a circuit moves through a magnetic field, an electric current is induced in the wire due to Faraday's law of induction. The current in the wire can have two possible directions. Fleming's right-hand rule gives which direction the current flows. The right hand is held with the thumb, index, or forefinger, and the middle finger is mutually perpendicular to each other at right angles.

The thumb is pointing the direction of the motion of the conductor relative to the magnetic field. The forefinger is pointing in the direction of the magnetic field. Then the second finger represents the direction of the induced or generated current within the conductor. when a conductor attached to a circuit moves in a magnetic field. It can be used to determine the direction of current in a generator's windings. This rule is used for electric generators.