Fleming's rules
In this section we will study about Fleming right hand rule and Fleming left hand rule.
Fleming left hand rule
In this section we will study about Fleming left hand rule.
Fleming left hand rule tell us about the direction of mechanical force after flowing a current through a coil, with a specific direction of current and magnetic flux.
Fleming left hand rule tell us about the direction of mechanical force after flowing a current through a coil, with a specific direction of current and magnetic flux.
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| Fleming left hand rule |
According to Faraday’s law of electromagnetic induction a current carrying conductor when placed in magnetic field force will exert on that coil or conductor, that direction of force is depend on the direction of current and the direction of flux and that will easily understand by the Fleming left hand rule.
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| Fleming left hand rule |
Statement
Arrange the left hand three fingers in a perpendicular to each other finger, the first finger, middle finger and thumb all are perpendicular to each other, after arranging these three fingers as shown in fig.
The direction of current indicate by middle finger, the direction of flux indicated by first finger then the thumb will show the direction of force exserted on that coil or conductor.
It is important to notice that the left hand rule is basically applied for the electric motor. that means we have to flow the current through a conductor or coil of motor then magnetic field and force will be created. Arrangement of coil of the motor is decided by the Fleming's left hand rule.
Fleming right hand rule
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| Flaming right hand rule |
In this chapter we will study about Fleming right hand rule and uses of the Fleming right hand rule
According to Faraday's law of electromagnetic induction, the flux created by one coil when links to another coil it will get produced EMF in that coil and due to that EMF current will flow through this coil and the direction of that current will depends on the direction of flux linkage and the motion of conductor as shown in figure we can easily understand the direction of current that flows through a coil.
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| Fleming right hand rule |
Statement of Fleming right hand rule
Arrange the first three fingers of the right hand in perpendicular to each other at shown in diagram.
Arrange the first three fingers of the right hand in perpendicular to each other at shown in diagram.
the first finger show the direction of flux,the thumb shows the direction of motion of that conductor then the middle finger will show the direction of current which is produced in that conductor.
Fleming's right hand rule is basically used unknown the direction of current produced in a coil or conductor when it cuts the magnetic field.
We can understand that direction of current with a lenz’s law electromagnetic induction.
As shown in diagram below the flux lines direction is from N to S pole, the movement of conductor from bottom to top side. due to that motion from bottom to top side it cuts that magnetic flux line’s and because of this motion of conductor EMF induced in that conductor and the direction of induced EMF work current will be as shown in figure.
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