The torque on a current-carrying coil, as in a DC motor, can be related to the characteristics of the coil by the 'magnetic moment' or 'magnetic dipole moment'. The torque exerted by the magnetic force (including both sides of the coil) is given by
The coil characteristics can be grouped as Abb acs 500 manual. called the magnetic moment of the loop, and the torque written as The direction of the magnetic moment is perpendicular to the current loop in the right-hand-rule direction, the direction of the normal to the loop in the illustration. Considering torque as a vector quantity, this can be written as the vector product |
Fallout new vegas interior lighting overhaul. Since this torque acts perpendicular to the magnetic moment, then it can cause the magnetic moment to precess around the magnetic field at a characteristic frequency called the Larmor frequency.
If you exerted the necessary torque to overcome the magnetic torque and rotate the loop from angle zero to 180 degrees, you would do an amount of rotational work given by the integral
The position where the magnetic moment is opposite to the magnetic field is said to have a higher magnetic potential energy.
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- The Moment of a force is a measure of its tendency to cause a body to rotate about a specific point or axis. This is different from the tendency for a body to move, or translate, in the direction of the force.
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