Magnetic field at center of wire

In summary, the conversation discusses the method used to calculate the magnetic field of two negative currents flowing through two drills. The conclusion is that the net magnetic field will remain the same, with the field at the center increasing due to the perpendicular alignment of the new line.
  • #1
cupid.callin
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1

Homework Statement


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The Attempt at a Solution



how i did was that i consider the two negative currents flowing through two drills ... and let current from the original wire is out of plane

so on first drill mag field will be towards left (field by original wire at its center is 0)

as after second drill , current density remains same and area dec ... so current also dec.

now the field due to new line will be perpendicular to line joining its center ... so field at center shall inc ... its not the answer :cry:
 

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  • #2
Oh ... solved it ... both field will have 120 angle ...

so net will remain same ... :p
 

What is the magnetic field at the center of a wire?

The magnetic field at the center of a wire can be calculated using the formula B=μ0I/2πr, where μ0 is the permeability of free space, I is the current in the wire, and r is the distance from the center of the wire.

How does the direction of the current affect the magnetic field at the center of a wire?

The direction of the current determines the direction of the magnetic field at the center of a wire. If the current is flowing in a clockwise direction, the magnetic field will be directed towards the center of the wire. If the current is flowing in a counterclockwise direction, the magnetic field will be directed away from the center of the wire.

Is the magnetic field at the center of a wire uniform?

No, the magnetic field at the center of a wire is not uniform. It is strongest at the center and decreases as you move away from the center of the wire.

How does the distance from the wire affect the magnetic field at the center?

The magnetic field at the center of a wire is inversely proportional to the distance from the wire. This means that as the distance from the wire increases, the magnetic field at the center decreases.

What factors can affect the magnetic field at the center of a wire?

The magnetic field at the center of a wire can be affected by the current in the wire, the distance from the wire, and the material the wire is made of. It can also be affected by external magnetic fields and the shape of the wire.

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