PASCO ES-9060 Charge, Equipotential and Field Mapper - Manual (Page 19)

Charge, Equipotential, and Field Mapper Model No. ES-9060
18 ®
Experiment 1: Charge Density Inside and on the
Surface of a Cylinder
Procedure:
1. Connect the Electrometer, outer shield of the Faraday Ice Pail, and
Electrostatics Voltage Source to a common earth ground. Follow the
setup in Figure 1.0. Connect the black lead over the edge of the shield
and the red lead over the edge of the ice pail. Connect the Voltage
Source to the same earth ground as the shield and the Electrometer.
WARNING: To avoid the risk of shock or electrical injury,
always ground your equipment. Before proceeding, follow
the setup in Figure 1.0 and instructions in step 1. To ground
yourself, keep one hand on the upper edge of the shield of the Faraday
Ice Pail or on the earth-ground lead.
2. Zero the Electrometer to remove any residual charge.
3. Roll the large conductive paper into a cylinder 8 to 10 cm in
diameter. Stand the cylinder on the corkboard, and connect the
cylinder to the 2000V output of the power supply.
4. Use the Proof Plane, Electrometer, and Faraday Ice Pail to sample
the charge densities at various places on the outer surface of the
cylinder, inside of the cylinder, and the rim of the cylinder. Be sure
to keep yourself grounded when sampling charges.
Equipment Required:
Charge Mapping Apparatus ES-9060) Electrometer (ES-9078)
Proof Plane (ES-9057B) Electrostatic Voltage Source (ES-9077)
Faraday Ice Pail (ES-9042A)
Figure 1.0: Experiment Setup with Cylinder
Electrometer
Ice Pail
Power supply
Cylinder
black lead
red lead
Proof Plane
2000 V
shield
to COM port