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Postby TGTS0907129» Forces and torques in magnetic field

Describe the forces and torques in a magnetic field

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If the moving charges are in a current-carrying conductor placed in a magnetic field, the conductor will experience a force which is a side thrust perpendicular to the directions of both current I and magnetic induction B. if currents are maintained in two parallel wires, we may regard the second as conducting charges through the magnetic field produced by the first. The second wire will experience a magnetic force. A reacting force is experimental basis for defining the ampere, one of the fundamental units in the mks system.

Another consequence of the force experienced by a current-carrying conductor in a magnetic field is that a coil suspended in a magnetic field experiences a torque. In many electrical instruments the torque experienced by a sensitively mounted coil is used as an accurate measure of current. In an electric motor the torque acting on the winding of the armature rotates the armature and provides an important means of converting electrical energy into mechanical energy.
 

By TGTT23071246 on 1/4/2016 11:27:18 PM
TGTS0907129 on 1/4/2016 11:25:20 PM
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