The current induced in a conducting loop that is exposed to a changing magnetic field is known as induced current.
Production of induced current
This change may be produced in several ways by:
- change the strength of the magnetic field
- moving the conductor in and out of the field
- altering the distance between the magnet and the conductor, or change the area of a loop located in a stable magnetic field
Strength and direction of induced current
The strength of the current induced will depend on the changing magnetic flux. The direction of the current is determined by considering Lenz’s law, which says that an induced electric current will flow in such a way that it generates a magnetic field that opposes the change in the field that generated it.