The correct answer is Fleming's right-hand rule.

• Fleming's right-hand rule is used to determine the direction of the induced current in a generator.

• Fleming's right-hand rule:
  • According to Fleming's right-hand rule, the thumb, forefinger, and middle finger of the right hand are stretched to be perpendicular to each other and if the thumb represents the direction of the movement of the conductor, the fore-finger represents the direction of the magnetic field, then the middle finger represents the direction of the induced current.
  • It is used used to determine the direction of current in a generator's windings.

• Fleming's left-hand rule:
  • According to Fleming's left-hand rule, if the thumb, forefinger, and middle finger of the left hand are stretched to be perpendicular to each other and if the forefinger represents the direction of the magnetic field, the middle finger represents the direction of the current, then the thumb represents the direction of the force.
  • Fleming's left-hand rule is applicable for motors.
• Maxwell's corkscrew rule:
  • ​The Maxwell Screw Rules is also called Maxwell's Corkscrew Rule.
    • Imagine a right-handed screw being turned so that it bores its way in the direction of the current in the wire.
    • The direction of rotation gives the direction of the magnetic field and the direction of thumb give the direction of current
• Ampere's swimming rule:
  • Ampere's swimming rule states that "If a man swims along the wire carrying current such that his face is always towards the magnetic needle with current entering his feet and leaving his head, then the north pole of the magnetic needle is always deflected towards his left hand."