Physics Unit 3 Practicals Edexcel (old Spec)

Neofytos

Hello i just needed to know, did ur teacher help u in what the exam paper will include? Cause mine did not :frown:

Can u tell me plz about what he said and if u dont want here e-mail me or add me in msn
Thanks in advance :smile:

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Reply 1

AshP

Hey no one's replied to the thread just wondering if anyone has heard any thing??

Reply 2

Mokuton

(edited 11 years ago)

Reply 3

redlisarose

omg. i'm nervous. my teacher did say about experiment using data logger. anyone know about this?

Reply 4

AshP

not sure I read on the spec that we woulndt be expected to use a data logger just talk about using it it in the planning section...

Reply 5

bluefire

could anyone of you tell me where do we connect the ammeter and voltmeters wires into it ...like there are three holes at the far right end of the voltmater and ammeter i alwayz get confused!......

Reply 6

Mokuton

(edited 11 years ago)

Reply 7

bluefire

Mokuton

black wire bottom hole red wire middle hole (middle = for ammeter and voltmeter)

Thanks....so what about the top hole .....and is there any reason behind it as where yo insert the wires.....and is there anything like negative terminal of LED to the lasy hole or positive the last???...plz do help me!!!thanks again

Reply 8

Mokuton

(edited 11 years ago)

Reply 9

Rei

Can someone tell me when I should use (Range/Average x100%) and when I should use ((Value 1-Value2)/Value2 x 100)

This is percentage difference/uncertainty btw..

Reply 10

AshP

The Range one is if youve taken more than one reading so like 5 values for time T you take the range and divide by average. If you did an experiment and can only get one value i.e you cant repeat cos it takes too long you take half the uncertainty divided by the value multiplied by 100. e.g. if you measure T and the most accurate value on the stop clock you can get is 0.01 for example then your uncertainty is half that value (0.005) over average then multiply by 100.

Reply 11

bluefire

Mokuton

if you get negative just change the poles.. check the meter. "COM" (bottom hole) is always for black wire. you never change that. you will only play with the red one. top or middle (%99 middle unless the paper says use ADC). check again for middle hole there are volt, ohm and mili ampere. top one is only for ADC you cant use it to measure voltage or resistance.