UNH ECE 401: Perspectives in ECE, Fall 2009 – Lab 2 1
ECE401 Lab 2: Ohm’s Law Fall 2009
The second laboratory assignment entails constructing the circuits shown below and
measuring the values indicated. Students are expected to calculate the theoretical
values prior to arriving at the lab, and those calculations are to be shown to the TA
before the lab begins. These steps are commonly referred to as the pre-lab. The
second homework will involve modeling the circuits of Lab 2 in Multisim to verify the
values measured in the lab.
1. Set up the circuit shown in Figure 1 and use your digital multi-meter (DMM) to set
the DC voltage supply to 10 volts. Measure the voltage across each resistor.
Figure 1
Value Theoretical Measured
V
R1
V
R2
V
R3
Table 1
2. After setting up the circuit shown in Figure 2 and adjusting the DC voltage source to
10 volts using the DMM, measure the current through both resistors.
Figure 2
Value Theoretical Measured
I
R1
I
R2
Table 2
3. After setting up the circuit shown in Figure 3 and adjusting the DC source to 10 volts
using the DMM, measure the voltage across each resistor.
Figure 3
Value Theoretical Measured
V
R1
V
R2
V
R3
V
R4
Table 3
R 1
51 0Ω
R 2
1.6 k Ω
R 3
1k ΩV 1
10 V
1 2
34
R 1
510Ω
R 2
1k Ω
V1
10 V
1
2
R 1
1k Ω
R 2
1k Ω
R 3
5.1 k Ω
V1
10 V
4
1
R 4
5.1 k Ω
2
3
