High Voltage
Electrostatics Kit
(Order Code HVEK-CRG)
The High Voltage Electrostatics Kits is an
accessory for the Vernier Charge Sensor. Use it
with a Faraday Pail, which is part of the Electrostatics Kit (order code ESK-CRG)
and the Charge Sensor (order code CRG-BTA) to investigate the charge on a sphere.
The kit includes an electrostatics voltage source and two conducting spheres. The
current output of the High Voltage Source is extremely low, making it safe for
electrostatic studies. Experiments include
Investigate the distribution of charge on a sphere
Transfer of charge on contact between two spheres
Charging by Induction
What is Included with the High Voltage Electrostatics Kit?
Electrostatic High Voltage Source
(output 750, 1500, 3000, 6000 VDC)
Ground Wire
Voltage Terminal
Proof Plane
Conducting Spheres (2)
DC Power Supply
Voltage Terminal Ground Wire
Using the Voltage Source
To use the High Voltage Source, ground the ground port of the High Voltage Source
by connecting the banana plug on the Ground Wire to the source and connect the
other end to a ground of your experiment such as the Ground Plane that is a part of
the Electrostatics Kit. Plug the Voltage Terminal into the desired port on the High
Voltage Source, such as the one marked 3000 V.
2
Connect the DC power supply to the High Voltage Source, and plug the power
supply into an outlet. Turn on the High Voltage Source.
To transfer a charge to an object, touch the paddle end of the Voltage Terminal to the
object. The High Voltage Source is only capable of delivering very small currents,
and is therefore safe for classroom use.
NOTE: Vernier products are designed for educational use. Our products are not
designed nor are they recommended for any industrial, medical, or commercial
process such as life support, patient diagnosis, control of a manufacturing process, or
industrial testing of any kind.
Performing Experiments with this kit, a Faraday Pail and the
Vernier Charge Sensor
To use this kit, you need to be able to measure the charge on the Conducting
Spheres. The best way to accomplish this is by using a Vernier Charge Sensor and a
Faraday Pail. When the Charge Sensor is attached to the Pail, the Pail can be used to
qualitatively and quantitatively measure charge on objects. Follow these instructions
to set up the Faraday Pail and Charge Sensor.
1. Place the plastic disk that holds the
Faraday Pail and cage on the Ground
Plane.
2. Place the Faraday Pail and the Cage on
the disk.
3. Connect the black lead from the Charge
Sensor to the Ground Plane.
4. Connect the red lead from the Charge
Sensor to the Faraday Pail.
5. Connect the Charge Sensor to an
interface, such as LabQuest
®
2, original
LabQuest, LabPro
®
, etc.
6. Connect a Grounding Wire between the
Cage and the Ground Plane.
7. Attach the grounding strap to your wrist.
8. Ground out the system and zero the sensor by pressing and holding the Reset
button on the sensor. You are now ready to collect data.
9. Now insert an object into the center of the Faraday Pail. While the object is in the
Pail, the Charge Sensor will display the charge.
Quantitative measurement of electrostatic charge can be challenging. Many factors
enter into the buildup of electrostatic charge and your ability to measure the charge.
The Charge Sensor is a very sensitive device and it can detect charge on objects
where you may not expect to see it, such as your body. Your success is also a
function of atmospheric humidity. Electrostatic studies are difficult in humid
environments because objects discharge quickly through multiple paths.
The Charge Sensor contains a range switch. You need to select a range that is
appropriate for the experiment and environmental conditions. For example if you are
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