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18 April, 11:46

What shape can be drawn through a solenoid to determine the magnitude of its magnetic field?

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  1. 18 April, 11:52
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    Amperes's law, one of Maxwell's equations, can be used to calculate the magnitude of the magnetic field in different situations. The law states that the integral of B (magnetic field) multiplied by a vector l is equal to the permeability of free space multiplied by the current. In order to use the law, the vector l needs to be drawn about the geometry. For a a solenoid, due to the symmetry, it would make sense to draw a rectangle that has one long side going through the solenoid and the second long side outside of the solenoid.
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