CIE physics as practicals

[nid404]

Obviously no one knows what REALLY will come in the exam, not even the school. 99% of schools do hint what apparatuses can come, then us students gather and try to guess what CAN come.

How is that cheating?! >:|

You may guess....guess as much as you want. No one is stopping you.
Don't let things out. The forum had defined cheating. It is for the mods and admins to decide what is cheating and what is not. We will take action appropriately

Thank you

[MaNi_DaDuDe]

For a guess, you need some sort of starting material or an idea. .

Never mind. I guess you know better.

pz

[nid404]

cool.

Thanks for your cooperation

[falafail]

it is considered cheating, actually.
if anyone finds out that your teachers have been giving you "hints" and reports you/them, you may well be disqualified.
at least, that's what my teacher told me.

but yeah, i'm resitting AS physics and i'm doing the practical on the 3rd as well. dunno what to revise tbh, might just go over electricity experiments.. i get confused when setting up that ammeter/voltmeter thing 

[nid404]

jst remember......ammeter in series, voltmeter in parallel....that is all u need to know for setting up

[falafail]

oh, no, i know how to set them up.. but there's this thing that works as both a voltmeter and an ammeter, and you have to turn this thing.. hold on, i'll find a picture. i don't know how to explain it .__.



^ something like that.

[nid404]

It's a digital multimeter....you just turn the knob to tell the machine what you want to measure

[falafail]

yeah, the whole turning the knob thing is what confuses me XD

[nid404]

yeah, the whole turning the knob thing is what confuses me XD

I'll see if I canget you a demo of some sort...that should help

[nid404]

try this

http://www.doctronics.co.uk/meter.htm

[falafail]

try this

http://www.doctronics.co.uk/meter.htm

ohthanks! i'll go check it out now ^_^

[falafail]

k, so.. it says that you should usually use the 20V one for measuring the voltage, but what about the current? do we choose 20A?

[nid404]

Yes

[evilish62]

how do we measure percentage uncertainity and percentage error ? and also... when we draw the graph is it necessary to start from origin ? i mean what if we have really large values for the y axis .. ?

[nid404]

http://www.physics.unc.edu/~deardorf/uncertainty/UNCguide.html

Guess this should help