Induced current from changing magnetic field, also known as electromagnetic induction, refers to the production of an electric current in a conductor when it is exposed to a changing magnetic field. This phenomenon was first discovered by Michael Faraday in the 1830s.
Induced current from changing magnetic field is generated when a conductor, such as a wire, is moved through a magnetic field or when the strength of the magnetic field changes. This movement or change in magnetic field creates a force that causes electrons to flow in the conductor, producing an electric current.
The strength of the induced current from changing magnetic field depends on several factors, including the strength of the magnetic field, the speed of the movement of the conductor, the angle at which the conductor cuts through the magnetic field, and the number of turns in the conductor.
Induced current from changing magnetic field has various applications in our daily lives, including power generation, electric motors, transformers, and generators. It also plays a crucial role in technologies such as wireless charging, magnetic levitation, and magnetic resonance imaging (MRI).
Lenz's law states that the direction of the induced current in a conductor will always be in such a way that it opposes the change in magnetic flux that caused it. This law helps to explain the direction of the induced current and why it flows in a particular direction in relation to the changing magnetic field.