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Overbeck Electric Field Mapping Apparatus

CP79589-05 CP79589-04 CP79587-00 CP79589-03 CP79589-02 945R4 CP79589-01 EPR1329 CP82102-01
This highly accurate apparatus uses the null method to find equipotentials.

  • Convenient Probe Measures Equipotential Lines
  • Field Plates Are Hidden
  • Six Different Field Plates Included
  • Five Conducting Plates Feature Popular Patterns in Conductive Paint
  • Two Templates for Blank Conducting Plates Included
The equipotential lines of an electric field define its size and shape. Experiments with this apparatus are based on the field-mapping board, which has two thumbscrews on the underside for fastening on conducting field plates. Six of these plates are included. Five have the following popular patterns permanently printed with conductive paint: a parallel-plate capacitor, an insulator and conductor within a field, two point sources within a field, a point and plane, and the Faraday Ice Pail. The sixth plate is blank, so you can paint your own design in conductive silver paint. The set also includes two templates.

To use the apparatus, attach one of the plates to the bottom of the mapping board with graph paper over the top. A potential divider with eight equal resistors is connected to the board, which has seven banana jacks along its top surface. To plot a point on an equipotential line, cover the board with graph paper and slip the long U-shaped probe around the board. With the probe and galvanometer connected to one of the seven potential jacks, a new reading is found at all points on the equipotential. You can mark the paper through a hole in the probe. Plotting and connecting these points for each of the banana jacks gives an excellent picture of the equipotential lines.

Ordering information: This apparatus requires a galvanometer and a battery or regulated power supply, sold separately.



   
 

ORDER


Apparatus
Item # Description For Use With L x W L x W x H Unit Availability Price Quantity
470110-580 Overbeck Electric Field Mapping Apparatus
1 Lab group - 33 x 29 x 5 cm Each Retrieving
470110-582 Replacement Field Plate for Overbeck Electric Field Mapping Apparatus: Insulator and Conductor
1 Lab group 21 x 28 cm - Each Retrieving
470110-584 Replacement Field Plate for Overbeck Electric Field Mapping Apparatus: Parallel Plate Capacitor
- - - Each Retrieving
470110-586 Replacement Field Plate for Overbeck Electric Field Mapping Apparatus: Faraday Ice Pail
1 Lab group 21 x 28 cm - Each Retrieving
470110-588 Replacement Field Plate for Overbeck Electric Field Mapping Apparatus: Two Points Within a Field
- - - Each Retrieving
470110-590 Replacement Field Plate for Overbeck Electric Field Mapping Apparatus: Point and Plane
- - - Each Retrieving

Battery for Apparatus
Item # Description Unit Availability Price Quantity
470144-988 6-12 V Zinc-Carbon Batteries, Volts: 6 (Heavy Duty), Terminals: Screw
Case of 4 Retrieving Restricted
Each Retrieving Restricted

Galvanometer for Apparatus
Item # Description Size Unit Availability Price Quantity
470110-600 Student Galvanometer
1.5 x 13 x 12 cm Each Retrieving

Power Supply for Apparatus
Item # Description Unit Availability Price Quantity
470016-052 AC/DC 6 V Power Supply
Each Retrieving
restricted This product is marked as restricted and can only be purchased by approved Shipping Accounts. To apply for a shipping account number, click here. If you need further assistance, call Customer Service at 800-387-9393 or email borealcs@vwr.com.

ACCESSORIES


Accessories
Item # Description Size Output Voltage Input Voltage Current Unit Availability Price Quantity
470144-988 6-12 V Zinc-Carbon Batteries, Volts: 6 (Heavy Duty), Terminals: Screw
- - - - Case of 4 Retrieving Restricted
Each Retrieving Restricted
470110-600 Student Galvanometer
1.5 x 13 x 12 cm - - - Each Retrieving

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