Which formulas describe the magnetic field/field lines?

Click For Summary
To plot the magnetic field vector and field lines of a magnetic dipole located at the origin of an xy plane, one can use the formulas for the magnetic field generated by a dipole. The magnetic field B at a point in space can be described by the equation B = (μ₀/4π) * (3(m·r)r - m(r²))/(r⁵), where m is the magnetic moment and r is the position vector. For visualizing field lines, one can use software or graphing tools to represent the vector field based on these calculations. Resources like Wikipedia provide a foundational understanding of magnetic fields that can assist in this process. Understanding these concepts is essential for accurately plotting the magnetic field and its lines.
ahxbshe1
Messages
1
Reaction score
0
hello!
im not very familiar with electromagnetic fields and classical physics, so i turn to you for help,
a problem:
assume you have a magnetic dipole in center (0,0) of a xy plane,
i want to plot the vector of the field at an arbitary point on this plane,and to plot the filedlines, how do i do this? which formulas describe the magnetic field/fieldlines?
thankyou verymuch
ahxbshe
 
Physics news on Phys.org
ahxbshe1 said:
hello!
im not very familiar with electromagnetic fields and classical physics, so i turn to you for help,
a problem:
assume you have a magnetic dipole in center (0,0) of a xy plane,
i want to plot the vector of the field at an arbitary point on this plane,and to plot the filedlines, how do i do this? which formulas describe the magnetic field/fieldlines?
thankyou verymuch
ahxbshe

Welcome to the PF. This web page has a reasonable introduction to magnetic field. Does it help?

http://en.wikipedia.org/wiki/Magnetic_field

.
 
Thread 'Correct statement about size of wire to produce larger extension'

Thread 'Correct statement about size of wire to produce larger extension'

The answer is (B) but I don't really understand why. Based on formula of Young Modulus: $$x=\frac{FL}{AE}$$ The second wire made of the same material so it means they have same Young Modulus. Larger extension means larger value of ##x## so to get larger value of ##x## we can increase ##F## and ##L## and decrease ##A## I am not sure whether there is change in ##F## for first and second wire so I will just assume ##F## does not change. It leaves (B) and (C) as possible options so why is (C)...
View full post »

Similar threads

Magnetic field pointing into a normal magnetized compass needle
  • · Replies 16 ·
Replies
16
Views
1K
Why is a current ring approx a magnetic dipole from very far off?
  • · Replies 7 ·
Replies
7
Views
2K
Spring-mediated dipole in a magnetic field
  • · Replies 31 ·
2
Replies
31
Views
2K
Effect of different magnetic fields on a magnetic dipole
  • · Replies 25 ·
Replies
25
Views
2K
Formula confusion for magnetic field inside capacitor
  • · Replies 6 ·
Replies
6
Views
2K
Circular trajectory traveled by a charged particle in a magnetic field
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Geometry of Magnetic field lines as they approach a magnet pole?
  • · Replies 28 ·
Replies
28
Views
3K
Approximating magnetic field as the field of magnetic dipole
  • · Replies 1 ·
Replies
1
Views
1K
Current and magnetic field in a spherical capacitor
  • · Replies 4 ·
Replies
4
Views
2K
Foucault Pendulum at the North Pole
  • · Replies 9 ·
Replies
9
Views
2K