How do you find the dipole moment of a spherical shell?
1 Answer
- Uniformly charged spherical shell of radius R carries a total charge =Q.
- It rotates about its axis with frequency =f.
- To find the magnetic moment of spinning shell we can divide.
- Now the magnetic dipole moment of ring is given by the expression in terms of position vector →r and current density →J as.
Does a point charge have a dipole moment?
The shape, size and configuration of a point charge is isotropic. From every direction you look at it, it always looks the same. Then how can one have a dipole moment of a point charge? To add to this, Griffiths further writes that if the point charge is situated at the origin, then the dipole moment is zero.
What is the charge of the dipole?
An electric dipole deals with the separation of the positive and negative charges found in any electromagnetic system. A simple example of this system is a pair of electric charges of equal magnitude but opposite sign separated by some typically small distance. (A permanent electric dipole is called an electret.)
What is dipole moment CH4?
The dipole moment of methane CH4 is zero.
What is dipole moment example?
A dipole moment is simply the measure of net polarity in a molecule. For example, ammonia (NHsub3) is a polar molecule. As you can see, ammonia consists of one nitrogen atom covalently bonded to three hydrogen atoms.
What is the magnetic moment of hollow sphere?
The magnetic moment M and the angular momentum L of sphere are related as M=2mxQL.
Can a single charge have a dipole moment?
The SI unit of dipole moment is coulomb meter (Cm). Though the electric dipole moment for two equal and opposite charges is defined, it is very general. It is possible to define and calculate the electric dipole moment for a single charge, two positive charges, two negative charges and also for more than two charges.
What is electric dipole moment SI unit?
The SI unit for electric dipole moment is the coulomb-meter (C⋅m).
What is dipole moment unit?
Dipole moment is defined as p q l. A dipole moment is a vector whose magnitude is q (2l) and the direction is from the negative to the positive charge. The unit of dipole moment is coulomb-meter (C m) or debye (D).
Which is the formula for the dipole moment?
Dipole Moment Formula Dipole moment definition can be given as the product of magnitude of electronic charge of the molecule and the internuclear distance between the atoms in a molecule. It is given by the equation: Dipole moment (µ) = Charge (Q) × Distance of separation (d) (µ) = (Q) × (d)
How is the dipole field related to a point charge?
which relates the dipole potential to that of a point charge. A key point is that the potential of the dipole falls off faster with distance R than that of the point charge. The electric field of the dipole is the negative gradient of the potential, leading to: Thus,…
Which is lower potential energy a dipole or an angle?
A dipole aligned parallel to an electric field has lower potential energy than a dipole making some angle with it. For a spatially uniform electric field E, the energy U and the torque where p is the dipole moment, and the symbol “×” refers to the vector cross product.
When to discuss the dipole moment of a non-neutral system?
When discussing the dipole moment of a non-neutral system, such as the dipole moment of the proton, a dependence on the choice of reference point arises. In such cases it is conventional to choose the reference point to be the center of mass of the system, not some arbitrary origin.