Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: What questions would you ask?

  1. Feb 2, 2010 #1
    1. The problem statement, all variables and given/known data

    The science fair is coming and I am nervous at what kind of questions the judges are going to ask. Can you guys ask me some questions you think they might ask?

    I am basically done with my science fair project about which factor affects the strength of an electromagnet the most. The 4 factors I used are number of coils, voltage of power source, diameter of core, and thickness of the wire. I basically just started with one factor and did experiments with that and moved on to the next one.

    I am in high school.

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Feb 3, 2010 #2


    User Avatar
    Homework Helper

    Question number 1: where did you get the materials from? :biggrin:
  4. Feb 3, 2010 #3


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    2. Why do you hypothezise that changing any of these variables (wire diameter, voltage, etc) will increase or decrease the strength of the electromagnet?
    3. Changing which variable has the greatest effect on its strength? Why?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook