PASCO ES-9060 Charge, Equipotential and Field Mapper User Manual

Page 8

Model No. ES-9060

Charge, Equipotential, and Field Mapper

The line will be air dry in 3-5 minutes at room temperature. However,
the medium won’t reach maximum conductivity until after 20 minutes
drying time.

e) A plastic template is included

with the PASCO Field Mapper
for drawing circles (See Figure
4). Place the template on the
conductive paper and draw the
circles with the conductive ink
pen. (If desired, you may first
draw the circle template with a
soft lead pencil and trace over the
pencil line with the ink.)

3. Mount the conductive paper on the corkboard using one of the

metal push pins in each corner.

Part II: Connecting the Electrodes to a Power Supply and

Checking their Potential

1. Using the supplied connecting wires, connect the electrodes to a

battery, DC power supply, or any other potential source in the 5 to 20
VDC range (See Figure 5). The potential source should be capable of
supplying 25 mA. (If possible, the potential should be equal to the full
scale reading of the electronic voltmeter used in the experiment.)

2. Place the terminal of a connecting wire over the electrode, then

stick a metal push pin through its terminal and the electrode into the

Figure 4: Drawing over the
template

Figure 5: Connecting Electrodes to a Power Supply and Voltmeter

DC Power

Supply

Voltmeter

corkboard

electrode

push pin

Note: The Voltmeter used
must meet the following
specifications: a) be at

least 10 M or higher
and b) have a range
which is equal to or
higher than the potential
used across the elec-
trodes. Any commercial
voltmeter, either analog
or digital, is adequate.
The PASCO ES-9078
Electrometer or the SE-
9589 Digital Multimeter
are recommended.

Ω