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Practical Investigation

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jmcdougall19:
Hey everyone,

So for my upcoming Assignment for physics I have to do a first hand practical investigation on electromagnetism. So this includes

- Performing the experiment safely
- Recording QUALITATIVE data
- Critically assessing model structures
- Function and their limitations
- Analyse and Present data
- Draw conclusions based of observations
- Draw conclusion based off primary and secondary sources
- Asses Errors

After close examination of the syllabus I believe I narrowed down the possible experiments to either be;
- Demonstrating the motor effect
- Demonstrating that a secondary voltage is produced by a transformer and an induction coil (Induction),
- Maybe proving Lenz's or Faraday's Law

I feel it will be these options because they are practical, you can do them at school with the budget school equipment given. But most importantly you attain QUANTITATIVE data from them.

So my first question would be, 'Do you think my hypothesised experiments are accurate (Hehe) or are they hard to do under test conditions'

If they are, my next question would be 'How would you record qualitative data and present this data', would you just say if if I changed 'X' it would increase/decrease/change 'Y' and thats it? And, It wouldn't be in a graph because you don't have numbers, so what would it be presented in?

Last question, how do you 'Critically assessing model structures', have no clue on this one.

For anyone that can help that would be great,
Thanks Heaps  :)

blasonduo:

--- Quote from: jmcdougall19 on March 07, 2019, 09:35:13 pm ---~Snip~

--- End quote ---

Hey!
Yep! All those experiments do seem plausible for an exam, completely agree!

Recording qualitative data is really just writing down your observations, if your wire moves up, you can't really accurately measure this, especially with the voltages you are using, so you'd write that it moved up (and maybe moved higher than the wire with less current) presenting this type of data could just easily be done in a table!

Critically assessing model structures, to what I interpret is asking you how suitable your experimental method was. When using a transformer, was it efficient? What could you change about it to get a more accurate result? That type of thing.

Good luck with your exam!

rh45_21:
This looks like your onto a good experiment. We did a demonstration of the motor effect for ours which was quite easy to get quantative data for our exam. So if your outta options, theres always that.

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