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Physics Lab

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LAB 5 REPORT: INTRODUCTION TO DC CIRCUITS
Partners: ______________ Name ________________
_________________________ Date: _____________
Objective:
1. Follow circuit diagrams to construct life-like dc electric circuits using circuit elements from a
simulated tool kit and meters integral to the circuit.
2. Measure resistance of a single resistor or a combination of resistors in a circuit from di-rect
measurements of voltage and current using a voltmeter and an ammeter.
3. Verify resistance combination rules for series and parallel circuits by comparing experi-mental
data to theoretical prediction.
Table 1 Determining Resistance from Measured Values of V and I
Battery emf V
(V)
V(V)
I(A)
R(Ω)
10.0
9.95
0.05
199
15.0
14.93
0.07
213.28
20.0
19.90
0.10
199
25.0
24.88
0.12
207.33
30.0
29.85
0.15
199
Table 2: Series Combination of Resistors
Resistor
Measured
V (V)
I (A)
P (W)
R
1
3.34
0.003
0.010
R
2
6.66
0.003
0.019
R
S
10
0.003
0.03
Table 3: Parallel Combination of Resistors
Resistor
Measured
V (V)
I (A)
R(Ω)
P (W)
R
1
9.99
0.009
1110
0.0899

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23
R
2
9.99
0.005
1998
0.0499
R
P
9.99
0.014
713.57
0.1398
Analysis and Sample Calculation
1. R = V /I = 19.90/0.10 = 199 Ω
Attach a screenshot of the circuit with meter connections for resistance measurement.
2. R
s
= V /I = 10/0.003 = 3333.33 Ω P
s
= V x I = 10 x 0.003 = 0.03 W
3. R
p
= V /I = 9.99/0.014 = 713.57 Ω
p
= V x I = 9.99 x 0.014 = 0.1398 W

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LAB 5 REPORT: INTRODUCTION TO DC CIRCUITS Partners: ______________ Name ________________ _________________________ Date: _____________ Objective: 1. Follow circuit diagrams to construct life-like dc electric circuits using circuit elements from a simulated tool kit and meters integral to the circuit. 2. Measure resistance of a single resistor or a combination of resistors in a circuit from di-rect measurements of voltage and current using a voltmeter and an ammeter. 3. Verify resistance combination rules for series and parallel circuits by comparing experi-mental data to theoretical prediction. Table 1 Determining Resistance from Measured Values of V and I Battery emf V (V) 10.0 V(V) I(A) R(Ω) 9.95 0.05 199 15.0 14.93 0.07 213.28 20.0 19.90 0.10 199 25.0 24.88 0.12 207.33 30.0 29.85 0.15 199 Table 2: Series Combination of Resistors Resistor Measured R1 ...
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Awesome! Perfect study aid.

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