Electrical Engineering ⇒ Topic : Magnetic potential
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Peter
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Magnetic Potential The magnetic potential at any point in the magnetic field is measured by the work done in moving a unit N-pole (i.e. 1 Wb strength) from infinity to that point against the magnetic force. Consider a magnetic pole of strength m webers placed in a medium of relative permeability μ r.At a point at a distance x metres from it, the force on unit N-pole is If the unit N-pole is moved towards m through a small distance dx, then work done is The negative sign is taken because dx is considered in the negative direction of x. Therefore, the total work done (W) in bringing a unit N-pole from infinity to any point which is d metres from m is The negative sign is taken because dx is considered in the negative direction of x. Therefore, the total work done (W) in bringing a unit N-pole from infinity to any point which is d metres from m is By definition, W = Magnetic potential V at that point. Note that magnetic potential is a scalar quantity. | |
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Gaurav
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Magnetic potential. The magnetic potential at any point within a magnetic field is measured by the work done in carrying a unit north pole from infinity to that point against the force of magnetic field | |
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