Magnetic field affecting a circular loop

In summary, the conversation discusses the relationship between a constant magnetic field and induced emf and current. It also touches on the calculation of force in a charged loop and how it differs from a current-carrying loop. The conversation raises questions about how to calculate the force on a current-carrying loop and whether it will cause the loop to move. Further resources are also suggested for learning about these concepts.
  • #1
Bilbo B
9
1
Homework Statement
Given a circular loop with current flowing placed in an external magnetic field. How to account for the magnetic force the field is going to exert on the loop and in what ways it will affect it? Will it will produce any motion if the magnetic field is constant and no change in flux?
Relevant Equations
Magnetic field due to circular loop
If the magnetic field is constant then no change in flux will bring no induced emf nor any induced current.
With the loop is in rest position the external magnetic field will exert a force but to calculate that force with the help of magnetic field isn't obvious.
If this were a charged loop, the force would've been calculated by multiplying the total charge with the external field but this doesn't seems to happen in case of current carriers(multiplying "i" with magnetic field ). So how to get it?
And if it exerts force whether it won't accelerate causing it to move or if it is the current or the moving electrons which are experiencing the force.
 
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  • #2

1. How does a magnetic field affect a circular loop?

A magnetic field can induce a current in a circular loop, causing it to produce its own magnetic field. This interaction between the two fields can result in a variety of effects, such as changes in the loop's orientation or the production of electrical energy.

2. What factors determine the strength of the magnetic field affecting a circular loop?

The strength of the magnetic field affecting a circular loop depends on the strength of the external magnetic field, the size and shape of the loop, and the material the loop is made of. The closer the loop is to the external field, the stronger the interaction will be.

3. How does the orientation of a circular loop affect its response to a magnetic field?

The orientation of a circular loop can greatly impact its response to a magnetic field. When the loop is parallel to the field, no current is induced. However, when the loop is perpendicular to the field, the induced current is at its maximum. The angle between the loop and the field also affects the strength of the induced current.

4. Can a magnetic field affect the shape of a circular loop?

Yes, a magnetic field can affect the shape of a circular loop. When a loop is placed in a non-uniform magnetic field, the forces acting on each side of the loop may be different, causing it to distort or deform. This effect is known as magnetic torque.

5. How is a circular loop used to measure magnetic fields?

A circular loop can be used as a sensor to measure the strength and direction of a magnetic field. By measuring the induced current in the loop, the strength of the external field can be determined. The direction of the field can also be determined by the orientation of the loop and the direction of the induced current.

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