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| Magnetic Flux |
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| We have already seen how the concept of electric flux helped us to learn the electric field intensities around the charges. Similarly concept of magnetic flux too helps us to calculate magnetic field strengths around magnets or current carrying conductors. |
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| Let us consider a surface in a region where the magnetic field prevails. Then one can find out the magnetic flux associated with the surface by finding the number of lines of force crossing the surface normally. |
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| Magnetic flux can be defined as the number of lines of force passing through a surface normally. |
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| Considering the surface 'Ds' in a magnetic field 'B'. |
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| When a surface is a plane and has total area A then |
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| SI unit of f is weber and magnetic flux is a scalar quantity. |
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| Hence we find that the magnetic flux depends on |
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| (i) the strength of the magnetic field. |
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| (ii) the area of the surface. |
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| (iii) the angle between the magnetic field vector and the area vector. |
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| Increasing the magnetic flux through a surface can be done in 3 ways. |
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| (ii) Flux increases if the magnetic field strength is more, i.e., when B is more. |
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