PASCO EM-8622 BASIC ELECTRICITY - Manual (Page 19)

15
012-04367E Basic Electricity
EQUIPMENT NEEDED:
-Circuits Experiment Board -Multimeter
-D-cell Battery -Resistors
-Wire Leads
Purpose
The purpose of this lab will be to continue experimenting with the variables that contribute to the
operation of an electrical circuit. You should have completed Experiment 4 before working on
this lab.
Procedure
➀ Connect the three equal resistors that you used in Experiment 4 into the series circuit shown
below, using the springs to hold the leads of the resistors together without bending them. Con-
nect two wires to the D-cell, carefully noting which wire is connected to the negative and which
is connected to the positive.
➁ Now use the voltage function on the Multimeter to measure the voltages across the individual
resistors and then across the combinations of resistors. Be careful to observe the polarity of the
leads (red is +, black is -). Record your readings below.
Series
➤
➤
➤
➤
➤
➤
➤ ➤
R
1
R
1
= V
1
=
R
2
= V
2
=
R
3
= V
3
=
R
12
= V
12
=
R
23
= V
23
=
R
123
= V
123
=
Figure 5.1
- -
V
1
R
2
R
3
V
23
V
12
V
123
+ + - +
- +
+ -
Experiment 5: Voltages in Circuits