What should i need to keep constant during my course work B.
2007-03-12 07:36:29 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Physics
Guys i am not asking about that. What factors should i keep constant or unchanged THROUGHOUT EXPERIMENT.[investigation of the relationship between the length of a metallic conductor and it's resistance].
2007-03-12 08:20:19 · update #1
Constants you need to keep:
temperature
a higher temperature increases resistance
turn off the power pack between each measurement to solve this
The attachments to the wire:
eg crocodile clips in the same direction
same clips so some are not bent in other ways and touch wire in different places
Keep the wire straight:
bends in the wire will increase its length and may change which part of the connector (eg crocodile clip) actually touches the wire, changing the length that is being used.
You can keep the potential difference constant, by changing the value on the power pack to get the same voltage each time.
This is not really necessary however as V=IR, so as you will be measuring the potential difference and current with a voltmeter and ammeter, you can just calculate the resistance from the values on them.
And you couldnt go wrong with the drugs idea of the people above me
2007-03-12 10:35:43 · answer #1 · answered by rg 3 · 0⤊ 0⤋
Notes, Attention in Class, Homework
2007-03-12 14:43:49 · answer #2 · answered by Anonymous · 0⤊ 0⤋
c= 3*10^8.
g: 9.81m/s^2
With these 2 constants you can't go wrong.
PS: drugs may also help
2007-03-12 15:15:49 · answer #3 · answered by Trey 3 · 0⤊ 0⤋
Always keep the speed of light constant.
Drugs may be good, too, though.
2007-03-12 14:39:52 · answer #4 · answered by Anonymous · 0⤊ 1⤋
Focus and the true desire to accomplish your goal.
2007-03-12 14:46:43 · answer #5 · answered by friendlyadvice 7 · 0⤊ 0⤋
Take drugs.
2007-03-12 14:38:45 · answer #6 · answered by Anonymous · 0⤊ 2⤋