Faraday's law for constant velocity, area and B-field

In summary, Faraday's law states that when a conductor moves through a magnetic field, an electric current is induced in the conductor. The equation for Faraday's law for constant velocity, area, and B-field is emf = -NBAv, and the induced current is directly proportional to the velocity of the conductor. Faraday's law can also be applied to non-constant velocities, with the equation emf = -NBA(dΦ/dt). This law has various everyday applications, including generators, transformers, electric motors, wireless charging, and induction cooktops.
  • #1
greypilgrim
508
36
Hi.

If a planar wire loop is moved through a homogeneous magnetic field (field lines perpendicular to the loop plane) with constant velocity and no rotation, Lorentz force will move some electrons to one side of the loop, creating a potential difference. But how does this work with Faraday's law
$$EMF=-\frac{d\Phi}{dt}$$
when neither the area enclosed by the loop nor its orientation nor the magnetic field are changing?
 
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  • #2
Consider the net EMF for the loop.
 
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Likes cnh1995
  • #3
Induced emf = rate of change of flux linkage
 

1. How does Faraday's law relate to electromagnetic induction?

Faraday's law states that when a conductor moves through a magnetic field, an electric current is induced in the conductor. This phenomenon is known as electromagnetic induction.

2. What is the equation for Faraday's law for constant velocity, area, and B-field?

The equation for Faraday's law for constant velocity, area, and B-field is emf = -NBAv, where emf is the electromotive force (induced voltage), N is the number of turns in the coil, B is the magnetic field strength, A is the area of the coil, and v is the velocity of the conductor.

3. How does the induced current in Faraday's law depend on the velocity of the conductor?

The induced current in Faraday's law is directly proportional to the velocity of the conductor. This means that as the velocity increases, the induced current also increases.

4. Can Faraday's law be applied to non-constant velocities?

Yes, Faraday's law can be applied to non-constant velocities. In this case, the equation is emf = -NBA(dΦ/dt), where dΦ/dt is the rate of change of magnetic flux through the coil.

5. How is Faraday's law used in everyday applications?

Faraday's law is used in various everyday applications, such as generators, transformers, and electric motors. It is also used in technologies like wireless charging and induction cooktops.

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