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  1. patrykh18

    Magnetic field outside a solenoid

    I attempted it but I wanna ask whether I'm going about it the right way: Also is the enclosed current angle always dependent? On one hand we have that: ##\oint####B.dl=####\mu_o####\int####J.da## Which reduces to: ##\oint####B.dl=####\mu_o####I## The first equation is a dot product...
  2. patrykh18

    Magnetic field outside a solenoid

    In his book on electrodynamics, Griffith talks about the magnetic field outside a solenoid. Firstly instead of dealing with a typical solenoid with closely wound loops, he instead works with a cylinder with a surface current that has no z-component. To get the angular component of the B-field...
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