·
)
Raw
Data Tables:
Current (+/- 0.3 Amperes)
|
||||||
Voltsge
(+/- 0.1 Volts)
|
Trial #
|
Trial #
|
Trial #
|
Trial #
|
Trial #
|
Trial #
|
1
|
.2
|
.2
|
.2
|
.2
|
.2
|
.2
|
1.25
|
.25
|
.25
|
.25
|
.25
|
.25
|
.25
|
1.5
|
.3
|
.3
|
.3
|
.3
|
.3
|
.3
|
2
|
.4
|
.4
|
.4
|
.4
|
.4
|
.4
|
3.5
|
.75
|
.75
|
.75
|
.75
|
.75
|
.75
|
Current (+/- 0.3 Amperes)
|
||||||
Voltsge
(+/- 0.1 Volts)
|
Trial #
|
Trial #
|
Trial #
|
Trial #
|
Trial #
|
Average
|
0.25
|
.25
|
.25
|
.25
|
.25
|
.25
|
.25
|
0.5
|
.3
|
.3
|
.3
|
.3
|
.3
|
.3
|
1.0
|
.35
|
.35
|
.35
|
.35
|
.35
|
.35
|
2.0
|
.5
|
.5
|
.5
|
.5
|
.5
|
.5
|
3.0
|
.65
|
.65
|
.65
|
.65
|
.65
|
.65
|
Current Running
Through Light bulb ↑
|
||||||
Current Running through Resistor ↑
The measurement uncertainty for the voltage was set at 0.1
Volts due to the difficulties achieving the exact amount of voltage desired using
the variable resistor. The measurement uncertainty is set at 0.3 Amperes
because the ammeter is marked to the closest 0.5 (Amp .) Therefore the data is
rounded to the nearest 0.5 Ampere. 0.5 Amperes divided by two is 0.25 Amperes,
then rounded to the closest significant figure the uncertainty is 0.3 Amperes.
The line on both graphs fit through all of the error
bars, so both graphs are linear functions.The equation for the first graph
(through the light bulb) is:
Current= 0.1433
(Amps/Volts) x Volts + 0.2166
The min/max lines on the second graph fall around
zero, so it can be assumed that the y-intercept is zero. The equation for the
line of the second graph (through the resistor) is:
Current= 0.2209 (Amps/Volts) x Volts
