What Is the Magnetic Field Inside a Long Solenoid?

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The discussion revolves around understanding the magnetic field inside a long solenoid, emphasizing the constructive and destructive interference of the induced H components from each loop. It highlights the importance of assuming tightly wound coils for accurate qualitative descriptions. The original poster expresses uncertainty about posting in the correct forum section, seeking guidance on where to direct their question. The conversation underscores the need for clarity in discussing magnetic fields in solenoids. Overall, the focus remains on the principles governing the magnetic field within and outside a long solenoid.
blueforest
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hi,
My homework is : Qualitative description of field due to long solenoid.
I think I post in wrong box, that box is about the calculus problem, right?
But I'm a new member and I don't know where to post my question. So if I'm wrong, I'm sorry, please answer me once and tell me the right box.
Thank you.
 
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For the question you have to think about how the individual induced H components for each loop of the solenoid add up constructively and destructively for both outside and inside the solenoid. I think it helps if you also assume that the coils of the solenoid are tightly wound.
 

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