0
/35
1
2
A
B
C
D
E
F
resistor (R
1
)
150
Ω
resistor (R
2
)
50
Ω
µ{(R
1
)}
0.02
Ω
µ{(R
2
)}
0.02 Ω
6
A
B
C
D
E
F
G
H
I
J
Nonohmic Resistor
Ohmic resistor
Winter Quarter 2009
Winter Quarter 2009
Experiment:
Ohm’s law and DC Circuits
Your name:
Cory Poynter
Partner:
Performed on:
3/13/2009
TA:
Section number:
Promptness % (100 means it was on time):
100
Additional Scores (+) /Penalties ():
Please insert your material in the space between or after the red or yellow boxes, not in
the boxes themselves.
Abstract
(4)
The purpose of this experiment was to investigate resistive elements in simple circuits, to verify
Ohm’s Law, and to see how combinations of two resistors affect a circuit. First Choose a resistor
whose nominal value is less than 150 Ω and measure and record the resistance as R
1
using the
Fluke as an ohmmeter. Next assemble the ohmic resistor circuit shown in Fig. 1. and vary the
output of the power supply to record the voltage V from the power supply display and the
measured current I from the Fluke at least ten different voltages. Next you are to assemble the
Nonohmic resistor circuit shown in Fig. 2, keeping your first resistor as R
1
and prepare a data
table for the current I flowing through the circuit, the voltage V
1
across the resistor, and the
voltage V
lb
across the light bulb. After words you are to construct a series circuit that’s in Figs 3
and 4 by first choose a second resistor R
2
that is not equal in nominal value to the first resistor
R
1
. Then adjust the power supply to get at least seven sets of values of the voltage V across both
resistors the current I flowing through them, the voltage V
1
across R
1
, and V
2
across R
2
. Finally
construct the parallel circuit in Figs. 5 and 6 and then collect at least seven data sets of the
voltage V across the resistors, the current I flowing through the circuit, and the currents I
1
and I
2
going through each resistor separately.
The following data is what we obtained from the
experiment:
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13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
A
B
C
D
E
F
G
H
I
J
I(mA)
Voltage ( V )
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 Winter '08
 Adams
 Physics, Resistor, power supply, Electrical resistance, Series and parallel circuits, REFERENCE SOURCE

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