Induced Current in Stretched Square Loop: Flux Change and Direction?

• Kaushik Classes
In summary, the direction of induced current in a stretched square loop in a uniform magnetic field depends on whether the flux is increasing or decreasing. There may also be an induced current when changing the shape of the loop from square to rectangular or circular, as long as the magnetic field remains uniform. This can be explained by a law that describes the direction of current as flux changes.
Kaushik Classes
when a square loop is stretched to make a rectangular or circular loop(wire length remain same) in uniform magnetic field into the plane of paper what could be the direction of induced current. please share explanation as well

Is the flux increasing or decreasing? Can you think of a law that describes the direction of current as flux changes?

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Kaushik Classes and davenn
the magnetic field is uniform.
How question is will there be any induced current while changing the share from square to rectangular or circular.

Kaushik Classes said:
the magnetic field is uniform. How question is will there be any induced current while changing the share from square to rectangular or circular.
Is the flux increasing or decreasing?

Last edited:

What is "induced current in a loop"?

"Induced current in a loop" refers to the phenomenon in which a changing magnetic field induces a current in a closed loop of wire. This phenomenon is known as electromagnetic induction and is governed by Faraday's Law.

How is "induced current in a loop" related to Faraday's Law?

Faraday's Law states that the magnitude of the induced current in a loop is directly proportional to the rate of change of the magnetic flux through the loop. This means that a stronger magnetic field or a faster rate of change will result in a larger induced current.

What factors affect the magnitude of the induced current in a loop?

The magnitude of the induced current in a loop is affected by the strength of the magnetic field, the rate of change of the magnetic field, and the number of turns in the loop. Additionally, the material and size of the loop can also impact the induced current.

Can the direction of the induced current be predicted?

Yes, the direction of the induced current can be predicted using Lenz's Law. This law states that the induced current will flow in a direction that opposes the change in the magnetic field that caused it. In other words, the induced current will create a magnetic field that opposes the original magnetic field.

What are some real-world applications of "induced current in a loop"?

Induced current in a loop has many practical applications, including generators, transformers, and electric motors. It is also the basis for wireless charging technology and is used in metal detectors, magnetic levitation systems, and induction cooktops.

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