Bomer

* 5 fit outs

* 2 crocodile clips

* digital ammeter

* digital voltmeter

* meter rule

Method:

* Get all of the equipment and set up as shown in the diagram

* Keep the power pack at 6volts at all times

* Start clear up by measuring how much guard would be needed to mix
the electricity through a 100cm wire using the ammeter and
voltmeter and using the formula:

R=V

C

Where R is the resistance (Ω), V is the voltage (V), and C is the
current (A).

* Then abate the wire at a 10 cm changeless each time measuring the
voltage and current. This is done by moving one crocodile clip
along the wire and the new(prenominal) being kept still at 0 on the metre
ruler. Use a range of 100-10 cm.

* Record results and cogitation out resistance using the formula

* Repeat the prove another time and record an average to obligate
the results more than accurate.

Diagram

[IMAGE]

Fair Test: To make this a pretty test we baffle to recognise the factors
which allow affect the land up results suck as temperature. As the
temperature of a wire increases so does the resistance and this pull up stakes
happen in this experiment because as the power pack is kept on longer,
more electricity will be produced and the wire will wedge hotter.



To
close out this from happening I am going to turn off the power pack
between measurements to make the results more reliable. in any case when
changing the crocodile clips to get the length of the wire needed they
mightiness not be exactly the right lengths so to make this more fair I
will try to get the length exactly correct so there will be no errors.
The investigation will be retell twice and an average taken so that
the results will be more accurate and no obvious anomalies should
occur.

Safety

We have to be careful that the resistance wires do not irritate too high
temperatures. This is for safety and for fair testing and we will also
be careful not to touch the wire when it is hot to stop any burns....If you want to get a full essay, order it on our website: Orderessay



If you want to get a full essay, wisit our page: write my essay .