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Help with pysics

  • 27-12-2010 3:24pm
    #1
    Howlin
    Registered Users, Registered Users 2 Posts: 199 ✭✭


    I have to do a question and im stuck on it, can anyone help me with it?

    You are trying to do Thomsons e/m experiment and you have a 0 to 250V variable high voltage supply and a wide gap electromagnet with field of 0.5 T in the gap

    a) draw a diagram of the apparatus showing the placcement of the internatl components and any needed dimensions, whihc will be given to a glass blowing vacuum technology section for constrution of the unit

    b) You discover that your variable supply can only go to 200 and not 250.
    Your supervisor said he will buy a cheap fixed version rather than a new variable. You realise that using both supples will allow you to solve the problem. Explain how using the two supplies can get over the problem

    c) Calculate the output voltage required from this supply for your purpose

    If anyone can help with any parts i wood be greatful


Comments

  • #2
    SkepticOne
    Closed Accounts Posts: 6,718 ✭✭✭SkepticOne


    Howlin wrote: »
    b) You discover that your variable supply can only go to 200 and not 250.
    Your supervisor said he will buy a cheap fixed version rather than a new variable. You realise that using both supples will allow you to solve the problem. Explain how using the two supplies can get over the problem

    c) Calculate the output voltage required from this supply for your purpose

    If anyone can help with any parts i wood be greatful
    Most likely you would connect the fixed power supply in series with the variable one. The voltages would then be added together.


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