Basic Idea:

• Measure the potential field of two "charges"

• 8

	What:	How Many:	Where:
If possible, this experiment is to be installed in the 152 lab; Hopefully the schedule has been arranged so that 104 students move to the 152 lab
	Pasco Field Mapper Kit	1	non-Majors storeroom, shelf L5
	Thin wires with aluminum eyelets (red and black)	1 each	Inside Field Mapper Kit storage box
	Conducting paper with drawn charges	1	Inside Field Mapper Kit storage box
	Metal push-pins	8	Inside Field Mapper Kit storage box
	9-volt DC battery	1	non-Majors storeroom, shelf L3
	Digital multimeter	1	Majors storeroom, locked in steel cabinet
	Meter probe wire (red)	1	Majors storeroom, hanging in the center aisle
	48" red wire	1	Bewkes 231 (Phys 152 Lab)
	48" black wire	2	Bewkes 231 (Phys 152 Lab)
	Alligator clips (red and black)	1 each	Majors storeroom, shelf B2
Place two extra multimeters on front bench (for spares) and a roll of masking tape
	Digital Multimeter	2	Majors storeroom, locked in steel cabinet
	Masking tape (to secure wires)	1	In the lab
The following components are installed on the front bench; Ask Jeff if we're using Two single- or One Dual-power supply!
	Either: Dual power supply (preferred)	1	Majors storeroom, shelf C2
	Or: 40v regulated power supply	2	Majors storeroom, shelf C2
	Digital Multimeter	1	Majors storeroom, shelf A3
	Wires	Black 12" – 2 Red 12" – 1 Black 24" – 2 Red 24" – 2	Bewkes 231 (Phys 152 Lab)

Notes:

• Lab setup (see the photo details page as well as the wiring diagrams found below):
• Note: If this equipment needs to be moved to the 104 lab, you will need three 48" wires so that the red, black, and green connectors on the power supply can reach the power panel connectors, since the power supply sits below the bench. Also, follow this lab setup map for Bewkes 204.
• The storage boxes are numbered 1 through 8. Place them as shown below. Each storage box has a pre-drawn conducting paper inside. Storage box #1 has extra sheets of conducting paper, including a few with electrodes already drawn on them.



If needed, here's the room map for setting up in Bewkes 204

• Main power supply connection:
  • Note: The big power supply in the stockroom is used to distribute voltage to the lab benches from the lab power supplies. Jeff will take care of this following his instructions for configuration with an external power supply.
  • A power supply on the instructor's bench is used to provide ±15 V to all the connected boards. Depending on availability, one dual-power supply (each side set to independent) will generally be used (Figure 1). If a dual-power supply is not available, two single-power supplies are connected in series (Figure 2).
  • Set the power supply voltage as follows:
    • Connect the black wire of the voltmeter to the green panel connector.
    • Connect the red voltmeter wire to the red panel connector, and adjust the right side power supply to +15V
    • Move the red voltmeter wire to the black panel connector and adjust the left side power supply to -15V

Figure 1: Connection of Dual Power Supply	Figure 2: Connection of Two Single-Power Supplies

• Board connection