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Thread: Physics coursework

  1. #1 Physics coursework 
    Forum Freshman
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    Hi everyone!
    Need some help here!
    I was wondering if you have any information about this:
    What is the shape of the magnetic field around a solenoid
    How can the magnetic field around a solenoid can be strengthened?
    Please post in nice comments

    Love being a geek!


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  3. #2  
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    Go to youtube and search for mit, they have some good video demonstrations on electromagnetics.


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  4. #3  
    Universal Mind John Galt's Avatar
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    Quote Originally Posted by Love being ageek View Post
    Need some help here!
    You don't appear to be asking for help. You appear to be asking for the answer. This is contrary to the unwritten rules of the forum.

    We are interested in helping people with their homework, but not by providing answers. Rather we wish to guide them towards answers, help them get past bottlenecks of comprehension, mudge their thinking in the right direction. Ultimately, if we simply provide the answer, we do the that person a disservice in two ways. They learn a fact, not a way of thinking about facts; they may come to rely on this approach.

    That would be unethical.

    Quote Originally Posted by Love being ageek View Post
    I was wondering if you have any information about this:
    What is the shape of the magnetic field around a solenoid
    How can the magnetic field around a solenoid can be strengthened?
    What sort of shape do you think it has? Here are some options? Which do you think is most likely?

    Sphere
    Circle
    Torus
    Dogbone
    Figure eight
    Compressed figure eight
    Cones, projecting axially from each end of the solenoid
    Ellipsoid

    Or is it a shape that is not here?

    Quote Originally Posted by Love being ageek View Post
    How can the magnetic field around a solenoid can be strengthened?
    Good question? What do you think? Would you agree that the most likely thing is to make a change directly affecting the solenoid? To take a simple illustration - it doesn't seem likely that digging a hole in Alaska would strengthen a solenoid in Illinois.

    So what properties does a solenoid have and what is it we do to it when we operate the solenoid? Which of these properties do you think might change the magnetic field if changed? How might we change the actions, to strengthen the field?

    Quote Originally Posted by Love being ageek View Post
    Please post in nice comments
    Back at you. Based upon your prior posting history you will choose to be offended by this offer of help. I hope that will not be the case. I have taken time out from a very busy schedule to offer you guidance. I hope you will find that guidance useful and I hope you will appreciate it.
    Last edited by John Galt; November 18th, 2013 at 06:24 PM. Reason: Correct QUOTE tags.
    seagypsy and Howard Roark like this.
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  5. #4  
    Forum Isotope
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    Quote Originally Posted by Love being ageek View Post
    Hi everyone!
    Need some help here!
    I was wondering if you have any information about this:
    What is the shape of the magnetic field around a solenoid
    How can the magnetic field around a solenoid can be strengthened?
    Please post in nice comments

    Love being a geek!
    What have you tried so far to answer these questions? As others have reminded you, we don't do people's HW for them, but we might be able to give hints to get you unstuck. But you haven't made clear what thinking, if any, you have already put into answering these questions. So please tell us.
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  6. #5  
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    Instead of beating around the bush about homework, why not recommend that: a large iron or steel nail or bolt be found, wind about 20 feet or so of thin, insulated wire around it, connect the ends to a low voltage source, battery, see how many paperclips the electromagnet so produced will pick up, then........change some things.

    (more turns of wire, less, two batteries in series, etc). Little difference exists between an electromagnet and a solenoid, really.

    Did I "give away" too much, ingrates? joc
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