What is a dipole moment?
The dipole is a neutral system containing two contradictory parts. For example, the water molecule is neutral as a whole, but one of its ends is positive, while the other is negatively charged. Such an object may affect other charged objects through electromagnetic forces. The dipole moment of the dipole is a vector amount describing the power of this effect. Its size equals the size of each charge, multiplied by the distance between two parts. Here is p the dipole torque, k is constant, q is the size of the pure charge on the remote particle and r is the separation between the center of the dipole and the remote particle. This approximation is almost perfect on the longitudinal axis of the system if r is significantly larger than the separation between the two components of the dipole. For particles far from this axis, approximation overvaluates strength up to factor 2.
Einstein's theory of relativity of the connectionIt is electric forces with magnetic forces. The magnetic field of the bar magnet can be approximated by the dipole of the magnetic charge, one near the North Pole of the Magnet, the other near the South Pole. Such a assembly is called a magnetic dipole and an influence that develops on a remote charge moving perpendicular to the field, can be approximated as 2*μqs/r 3
Electric current moving in a circular wire generates a magnetic field similar to a field of short bar magnet. The magnetic dipole moment of such a wire is the size of i*and , where i is the current and and At the atomic level, magnetism is often considered to be resulting from the movement of electrons along curved roads. The magnetic dipo torque for such a particle equals q*s/(2R) , where q is the size of the charge, s is the speed of the particle and r is the path.
In additionY dipole on remote charged particles The dipole moment is useful for determining the force of the outer field develops on the dipole. For example, a microwave creates short -term and various electric fields. These fields cause the spinning of water molecules that are electric dipoles. This rotary movement leads to a growing temperature that cooks food. Maximum torque developed on an external field dipole is simply a product of a dipole torque and field strength.