深夜亚洲福利久久

18.7 Applications of the Biot-Savart law

 

(a)  Magnetic field strength at the centre of a circular coil

The Halliday Resnick and Walker concept simulation shows the shape and magnitude of the field at different points for two different radii. Once again the simulation determines B, not H.

 

(b)  Magnetic field strength on the axis of a circular coil 

This 7Activestudio  gives a derivation of an expression for the magnetic flux density (again called 'magnetic field') at a point on the axis of a circular coil in vacuum.



Understanding Physics

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Mansfield and O'Sullivan, Understanding Physics, 3rd ed., John Wiley & Sons, Chichester (2020),

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