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Physics
Classical Physics
Electromagnetism
Solenoid Magnetic Field calculation
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[QUOTE="Hesch, post: 5460794, member: 548828"] Ampere's law is used. It says that only the current passing through the area of the rectangle is to be included in the calculation: [SIZE=6]∫[/SIZE][SUB]circ[/SUB][B] H ⋅ ds[/B] = N * I They are not taken to be zero, but they cancel each other due to symmetrical reasons. The formula is only valid as for the[B] center[/B] of the solenoid. The upper side of the rectangle is assumed to be so far away, that it has no influence, so this horizontal component is taken to be zero. You are the one to sketch the rectangle. [/QUOTE]
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Forums
Physics
Classical Physics
Electromagnetism
Solenoid Magnetic Field calculation
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