Why is it important to have relative motion between a magnetic field and a conductor?
Beause of Faraday’s Law of Electromagnetism. Faraday’s Law states that if there is change in flux linkage to a conductor with respect to time, then emf will be induced in that conductor. So to have induced emf in coil there must be relative motion between coils and Field.
What is relative motion between coil and magnet?
Overview. The relative motion between a magnet and coil induces an electric current within the coil. This is known as Faraday’s law of electromagnetism. The direction of current depends on the direction of motion and also on the direction of the pole of the magnet facing the coil.
Is the relative motion between bar magnet and coil is necessary to induced emf?
An emf is induced in the coil when a bar magnet is pushed in and out of it. Emfs of opposite signs are produced by motion in opposite directions, and the emfs are also reversed by reversing poles. The same results are produced if the coil is moved rather than the magnet—it is the relative motion that is important.
Why is an electric current produced when there is relative motion between magnet and coil?
Explanation. When a coil is brought near the magnet, and a relative motion is generated between the two by either moving the magnet or the coil, the magnetic flux links through the coil changes. This change in the magnetic flux produces an emf and hence, subsequent electric current in the coil.
What is the relationship between magnetic force and magnetic field?
The magnetic force F is proportional to the charge and to the magnitude of velocity v times the magnetic field B. Depending on the initial orientation of the particle velocity to the magnetic field, charges having a constant speed in a uniform magnetic field will follow a circular or helical path.
What is meaning of relative motion?
Definition of relative motion 1 : motion as observed from or referred to some material system constituting a frame of reference (as two adjacent walls and floor of a room) — see relativity sense 3. 2 : the motion of one body with respect to another regarded as fixed — compare relative velocity.
When the relative motion between a magnet and coil is stopped the flow of current?
This phenomenon is called Electromagnetic Induction.
Why does the electric current appears in the loop when there is a relative?
Each incremental change in magnet position causes a corresponding change in the position of electrons in the coil. The ongoing process results in continuous electron movement (flow). Hence an electric current.
What is produced if the magnet and conductor move relative to each other?
Electromagnetic induction is the process of generating electric current with a magnetic field. It occurs whenever a magnetic field and an electric conductor, such as a coil of wire, move relative to one another.