PASCO Xplorer-GLX Users’ Guide - Manual (Page 129)

X p l o r e r G L X U s e r s ’ G u i d e 123
A c t i v i ty 6 : Vo l ta g e v e r s u s R e s i s ta n c e
Background
In this experiment, you will construct the circuit pictured to the right and measure
the voltage (relative to the negative terminal of the battery) at points A through F.
For each point in the circuit, the GLX will record the measured voltage (V) and
the total resistance across which the voltage was measured (r).
Sketch a prediction of the graph of V versus r. Explain your prediction in terms of
what you know about
• how current flows through the circuit;
• the relationship between voltage, current, and resistance; and
• the total resistance of two or more resistors in series.
Before You Begin
Start a new experiment on the GLX.
1. Press to go to the Home Screen.
2. Use the arrow keys to highlight the Data Files icon and press to open
the Data Files screen.
3. Press to open the Files menu and press to select New File.
4. When the GLX asks if you would like to save the previous file, press
to save or not to save.
Procedure
Equipment Set-Up
1. Using the battery, battery holder, resistors, and alligator clip leads, construct
the circuit pictured on the previous page.
Equipment Quantity
Xplorer GLX 1
Voltage Probe 1
Resistors, 1000
Ω
5
Battery and Battery Holder
(“AA,” “C,” “D,” or similar)
1
Short Alligator Clip Leads 6
+
-
battery
1000 W
1000 W
1000 W
1000 W
1000 W
A
B
C
D
E
F
F4 1 pqrs
F1
F2