What is the magnetic dipole moment of the disk?

What is the magnetic dipole moment of the disk?

Consider a nonconducting disk of radius R with a uniform surface charge density σ. The disk rotates with angular velocity ω. = σωrdr. Magnetic moment of ring: dµ = dI(πr2) = πσωr3dr.

What is the formula for magnetic moment of a bar magnet?

μ ≡ 2px
This can be written in terms of the magnetic moment of the bar magnet, μ defined by the formula μ ≡ 2px.

Does bar magnet have a dipole moment?

Yes, each part will be magnetic dipole. The dipole moment of each part will be equal to nm.

What is the magnetic moment of the rotating ring?

The magnetic moment of a rotating charged ring is m=IA=λvA. Here I is current, λ is linear charge density, and A is the enclosed area. This expression is true even relativistically. The quantities λ,A don’t depend on the rotation speed, so the magnetic moment is limited to λcA.

What is the formula of magnetic dipole?

A tiny current loop act’s as a tiny magnet technically called a magnetic dipole. The strength of that tiny magnet, the magnetic dipole moment m, is given by m = NIA, giving the units – Ampere meter square. The magnetic dipole moment is a vector quantity and its direction is given by the right-hand thumb rule.

What is magnetic moment of magnet?

Definition of magnetic moment : a vector quantity that is a measure of the torque exerted on a magnetic system (such as a bar magnet or dipole) when placed in a magnetic field and that for a magnet is the product of the distance between its poles and the strength of either pole.

Why bar magnet is magnetic dipole?

Electric charges can be isolated as positive and negative ones, whereas magnetic poles cannot be isolated as single monopole. No matter how many times a parmanent magnet is cut, each piece always has a north pole and a south pole, forming the magnetic dipole moment (simply magnetic moment).

Why is a bar magnet called a magnetic dipole?

Answer. Answer: A magnet is called a “magnetic dipole” because it has two poles (north and south).

What is magnetic moment in magnet?

: a vector quantity that is a measure of the torque exerted on a magnetic system (such as a bar magnet or dipole) when placed in a magnetic field and that for a magnet is the product of the distance between its poles and the strength of either pole.