Vernier Mirror Set for Optics Expansion Kit - Manual (Page 3)

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11. Touch the two spheres together which establishes an electrical connection
between the spheres briefly and then move them apart.
12. Use the Proof Plane to measure the charge on each sphere.
13. Explain your results. [Each sphere had about half the charge measured on the one
sphere by itself.]
Charging by Induction
Use the equipment to detect charge generated by induction. You will need a
Faraday Pail, Cage, Ground Plane, and Vernier Charge Sensor.
1. Attach the Charge Sensor black lead to the Ground Plane.
2. Attach the Charge Sensor red lead to the Faraday Pail.
3. Connect a Grounding Wire between the Cage and the Ground Plane.
4. Attach the grounding strap to your wrist.
5. Ground the system and discharge the sensor by pressing and holding the
Reset button on the sensor.
6. Set up the High Voltage Source by connecting the test terminal to the
3000 V terminal. Ground the other terminal to the Ground Plane.
7. Use the Ground Wire from the Ground Plane to ground both spheres, discharging
them.
8. Touch the Voltage Terminal to a sphere, charging it.
9. Bring the second sphere near the first.
10. Ground the second sphere by touching it with your finger and then remove your
finger.
11. Use the Proof Plane to measure the charge on each sphere.
12. Explain your results. [When the second sphere is grounded, positive charge on
that sphere attracts negative charge from ground to the second sphere. When the
ground is removed, a net negative charge is left on the second sphere.]
Specifications
Wall mount power supply output: 15 VDC, 1000 mA, UL listed
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Other Products for Use with this Kit
Vernier Charge Sensor (order code CRG-BTA)
The Charge Sensor is used as an electronic electroscope. Unlike a traditional
electroscope, the Charge Sensor can make quantitative measurements. Numerical
measurements improve many electrostatics experiments such as charging by
induction, charging by friction, and charging by contact. The sensor can also be used
to measure charge polarity.
Electrostatics Kit (Order Code ESK-CRG)
The Electrostatics Kit is an accessory for the Vernier Charge Sensor. This kit allows
students to perform a range of experiments in electrostatics including the use of
Faraday’s Ice Pail, quantitative and qualitative measurement of charge, charging by
friction, charging by contact and charging by induction. The kit includes
 Faraday Pail and cage
 Grounding plane
 Grounding wire and wrist strap
 Charge producers and proof plane
 Wool, vinyl, nylon rod, PVC rod
 Cotton cloth