OCR Physics A2 Practical

Baredd

Anyone got any advice or tips?

Reply 1

Asian cutie

hi im doin this practical too. i have no idea but i think the first question wil probably be a standard ciruit question. does any1 know a gud way to practice log graphs. i dont do maths so i need some revision on it! :stupido3:

Reply 2

ollster

Just look over past papers. The papers follow the same format always, question 1 WILL be a log graph with a y intercept. If you ever get a curve then you know things are wrong.

Just remember the log rules.

log A + log B = log (AB)
log A - log B = log (A/B)
2 log A = log A^2

Taking log of e^x gives x
and e of log x gives x

And for the evaluation the common responses are, there are not enough results taken so more need to be done, repeats need to be taken. For oscillations a fiducial mark helps accuracy.

The question of justify your significant figures should always be answered "The significant figures for my answer are the same (or one more than) as the raw data"