Magnetic dipole moment1/6/2024 Electron analogy: spinning ball of charge circulation of charge around spin axis similar to current loop electron has net magnetic moment. The magnetic dipole moment is represented by a vector \displaystyle in the previous part. Magnetic Dipole and How Magnets Work A solenoid and a magnet orients themselves with axis parallel to field. When there is an external magnetic field, a current-carrying loop will rotate to align the magnetic dipole moment along the magnetic field. Therefore, Torque which is acting on the magnet will be, m ×H. The torque on a small current loop or magnetic dipole placed in a magnetic field is directly related to the strength of the field: G G µ G is parallel to B G B (7.7) (see the 8.02 Course × G If the dipole is free to move, it will rotate until µ Notes, Section 8.4, for a detailed. The magnetic dipole moment can be thought of as a compass needle. The magnetic dipole moment of a bar magnet is 3îAmp m2 and the magnetic field intensity is 2 ×105 T in y-direction then calculate the torque on the magnet. A permanent magnet also has a magnetic dipole moment. The magnetic moment is a vector quantity that is used to calculate the torque generated by a magnetic field while the magnetic dipole moment is a value used to define the current of a loop to find the magnetic field on axis. The main idea for this topic is to define the magnetic dipole moment and distinguish from the magnetic moment. Values of for several types of atoms are given in Table 12.1. The magnetic dipole moment is a measure of the strength of the magnetic dipole. For a particular atom, the net magnetic dipole moment is the vector sum of the magnetic dipole moments. In a loop of current, the magnetic dipole moment is a vector that is perpendicular to the loop and can be found using the right-hand-rule. The magnetic field generated by a magnet points from south to north and is proportional to its magnetic dipole moment. The magnetic dipole moment of a loop of current may be considered to be a measure of the strength of the magnetic field.
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