Generator effect/Electromagnetic induction

• The generator effect, also known as electromagnetic induction, involves the change in magnetic field that a wire experiences as it moves through it, which creates a potential difference.
• The potential difference disappears when the wire stops moving, as there is no change in the magnetic field.
• The direction of the potential difference swaps each time the direction of the wire or the magnets change.
• A complete circuit is necessary for the induced potential difference to generate a current.
• The strength of the magnetic field, the speed of the wire or the magnets, and the number of turns in the coil can be altered to change the size of the induced potential difference and the current it generates.
• The concept of electromagnetic induction also applies to the removal of a single magnet into and out of a coil of wire, which induces a potential difference in the coil and generates a current when the circuit is complete.
• The direction of the current changes whenever the direction of the magnet changes.
• The direction of the current can also be changed by swapping the poles of the magnets.