Current flowing through a loop due to an infinite wire

In summary, the problem involves an infinitely long wire carrying a 1 A current in the positive x direction and a 5-turn circular loop located in the x-y plane. The magnetic field at the center of the loop is 0, and the task is to determine the direction and magnitude of the current flowing in the loop. The relevant equations are the Biot-Savat Law for the loop and Ampere's Law for the wire. However, to induce a current in the loop, there would have to be an AC current flowing in the wire. A scan of the actual problem statement and diagram is needed for further analysis.
  • #1
eatsleep
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Homework Statement


An infinitely long wire carrying a 1 A current in the positive x direction is placed along the x-axis in the vicinity of a 5-turn circular loop located in the x-y plane as shown in the figure. If the magnetic field at the center of the loop is 0, what is the direction and magnitude of the current flowing in the loop?

Homework Equations


Biot-Savat Law for the loop and amperes law for the wire

The Attempt at a Solution


I can calculate the magnetic field in the wire using amperes law, and same for the loop using the biot savat but if the magnetic field in the center is 0 is there any current flowing?
 
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  • #2
eatsleep said:

Homework Statement


An infinitely long wire carrying a 1 A current in the positive x direction is placed along the x-axis in the vicinity of a 5-turn circular loop located in the x-y plane as shown in the figure. If the magnetic field at the center of the loop is 0, what is the direction and magnitude of the current flowing in the loop?

Homework Equations


Biot-Savat Law for the loop and amperes law for the wire

The Attempt at a Solution


I can calculate the magnetic field in the wire using amperes law, and same for the loop using the biot savat but if the magnetic field in the center is 0 is there any current flowing?

To induce a current in the loop, there would have to be an AC current flowing in the wire. Can you post a scan of the actual problem statement and diagram?
 

What is an infinite wire?

An infinite wire is a theoretical concept used in physics to simplify calculations and models. It is a wire that extends infinitely in both directions and has a constant current flowing through it.

How does a current flowing through a loop interact with an infinite wire?

When a current flows through a loop, it creates a magnetic field around the loop. This magnetic field interacts with the magnetic field created by the current in the infinite wire, causing the loop to experience a force.

What is the direction of the force experienced by the loop?

The direction of the force experienced by the loop is determined by the right-hand rule. If the current in the loop and the current in the infinite wire are in the same direction, the force will be attractive. If they are in opposite directions, the force will be repulsive.

How does the distance between the loop and the infinite wire affect the force?

The force experienced by the loop is inversely proportional to the distance between the loop and the infinite wire. This means that the closer the loop is to the wire, the stronger the force will be.

Are there any practical applications of this concept?

Yes, this concept is used in many practical applications, such as in the design of electric motors and generators. It is also used in the study of electromagnetism and the behavior of current-carrying wires.

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