The direction of induced emf is affected by the rate of change of magnetic flux, the strength of the magnetic field, and the orientation of the conductor relative to the magnetic field.
Lenz's Law states that the direction of the induced emf is always such that it opposes the change in magnetic flux that caused it. This means that the induced emf will always try to maintain the original magnetic field.
Yes, the direction of induced emf can be reversed by changing the direction of the magnetic field or by changing the orientation of the conductor relative to the magnetic field.
The right-hand rule is used by pointing the thumb of the right hand in the direction of the motion of the conductor, and the fingers in the direction of the magnetic field. The direction of the palm will then indicate the direction of the induced emf.
Yes, the direction of induced emf affects the flow of current. The current will flow in the direction opposite to the induced emf, as stated by Ohm's Law.