Unit 1
(updated 5/2/2014)
For the Modeling E&M curriculum you need and interface to collect data. Vernier’s latest interface is LabQuest 2 but LabQuest and LabPro will work fine. Pasco sells Data Studio.
For graphing I recommend Logger Pro from Vernier. This program can be used to take data with probes and can be used for graphing. Vernier also sells a product called Graphical Analysis that is only for graphing.
One of the labs uses Microsoft Excel.
If you have CASTLE materials, the things I marked with an ** come in the CASTLE kit.
Unit 1 (Electric charge and electric fields)
Balloons
Scotch tape
5/8 “ PVC pipe (from a place like home depot, they sell 10 foot pieces for a little over $1.50)
5/8” x 3/8” acrylic rod (, found for $4.14 for 6 feet, also a shipping charge)
or below is a thinner wall
5/8” x 1/2” acrylic rod (, found for $2.46 for 6 feet, also a shipping charge)
Supplies to make electrophorus
Aluminum foil
Styrofoam plates
Aluminum piepans
Neon bulbs (NE-2H)
Graphite covered polystyrene spheres (I have not been able to find these so I buy the spheres online and “paint” them with graphite lubricant.) $2.89 for 12 spheres
Film canisters or pill bottles (if you do Leyden jars)
Desirable:
EM Field software (PAS) (OUT OF BUSINESS!:(
-Alternative is PhET simulation “Charge and Fields” which is free
VandeGraaff Generator (Most every science supplier has them) apprx $500
Charge sensor: ($75)
Unit 2 (Electric potential and electric energy)
Contour mapping kit ($23.25) Can also be made with a plastic storage container and modeling clay. (One per group)
**Bulb holders ($10.30 for 10)
($25.00 for 10)
**#48 “long” bulbs ($25 for 25)
(10 for $2.37)
**#14 “round” bulbs ($25 for 25)
(10 for $2.80)
**.025 F capacitors ($49 for 2)
.1 F capacitor ($39 ea)
(get 4 of these if you are studying capacitors, otherwise not needed)
Genecon generator ($56)
($59)
(One per group)
DC Power supply 12V There are many to choose from. Vernier sells one that works well and has built in voltmeter and ammeter.: ($199)
Do a search on Ebay for 30 V power supply. There are many 30V/5A power supplies for approximately $60. (One per group)
Digital multimeters Many places. Harbor Freight Tools has budget variety for approx. $5.
(One per group)
12” or 15” cooking dishes (10” wide)
(One per group)
½” x ¾” aluminum bar (cut pieces of 6-8” lengths)
½ or ¾” diameter aluminum rod, 1” long
(Two per group)
[pic]Picture of potential mapping lab
Modeling clay
**Alligator clip leads ($15 for 10)
($11.85 for 6)
I prefer to use leads with a banana plug on each end and slide on an alligator clip when needed.
($5.10 for 10)
Radio Shack ($3.49 for 10)
**Battery holders ($1.65)
($2.00)
D-Cell batteries (5 per group if doing capacitor labs), you could use a power supply instead
Unit 3: (Circuits)
Differential voltage probes ($39) one per lab group
Ceramic Power resistors: 5 ohm, 10 ohm, 20 ohm, 50 ohm, 100 ohm (4 of each) ($0.69 ea)
also available at Radio Shack
Nichrome wire or Kanthal wire: 25 gauge, 28 gauge, 31 gauge I buy mine on ebay. I do not need much (about a meter of each per group) and if you do a search for nichrome or Kanthal wire you can purchase reasonable quantities.
These gauges were chosen because a jump of 3 gauges is ½ the diameter. One source is Price is 5 to 10 dollars/100ft shipped.
The other equipment needed is already listed in unit 2 (power supplies, leads, multimeters)
Unit 4: (Magnetism and Electromagnetic induction)
**Compasses ($38 for 5)
Bar magnets
Iron filings
A cathode ray tube or an oscilloscope is nice to have
(Pair per group)
A very strong horseshoe magnet is nice to have.
[pic]
Current balance ($279)
In the Unit 4 materials there are plans for a much cheaper homemade balance, made for under $10 each. Here is a picture of the homemade balance made by teachers in the workshop being used.)
Need a centigram or milligram balance for the lab with a capacity of at least 110g. I borrow them from the Chemistry department.
Solenoid
$145
Galvanometer ($11.50)
($8.75)
For Faraday’s Law lab
Vernier power amplifier for LabQuest ($199) plus an Instrumentation Amplifier ($59)
or a
Function generator ($679)
Magnetic field demonstration devices (These are homemade.) [pic]
In use
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electrophorus
Leyden jar
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