Technical data

The resistance of wires - dependence on the length andcross-section

Article no: P1372500

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Principle

Working out the equation R = ρ l∕A takes some time. The relationships R ∼ l and R ∼ 1∕A should first be recognized. We recommend that each group of students only carry out one of the experiments, and following this, gain the knowledge that R ∼ l∕A in a joint evaluation.

Benefits

No additional cable connections between the building blocks needed - clear arragned and quick setup
Contact saftey due to puzzle blocks system
Corrosion-free gold plated contacts
Doubled earning sucess: Electric circuit diagram on top, real components can be seen unterside

Tasks

How do the length and cross-sectional area of a wire influence the value of its resistance?

Determine the relationship between the resistance of a wire and its length and cross-sectional area.

Scope of delivery

Straight connector module, SB	05601-01	3
Angled connector module, SB	05601-02	2
Interrupted connector module with sockets, SB	05601-04	2
Junction module, SB	05601-10	2
Straight connector module with socket, SB	05601-11	2
Angled connector module with socket, SB	05601-12	2
On-off switch module, SB	05602-01	1
Alligator clips, bare, 10 pcs	07274-03	1
Connecting plug, 2 pcs.	07278-05	1
Connecting cable, 32 A, red, various lengths	07360-01	1
Connecting cable, 32 A, blue, various lengths	07360-04	1
Connecting cable, 32 A, red, various lengths	07361-01	2
Connecting cable, 32 A, blue, various lengths	07361-04	2
Constantan wire, 15.6 Ohm/m, d = 0.2 mm, l = 100 m	06100-00	1
Constantan wire, 6.9 Ohm/m, d = 0.3 mm, l = 100 m	06101-00	1
Constantan wire, 4 Ohm/m, d = 0.4 mm, l = 50 m	06102-00	1
PHYWE Analog multimeter, 600V AC/DC, 10A AC/DC, 2 MΩ, overload protection	07021-11	2
PHYWE Power supply, 230 V,DC: 0...12 V, 2 A / AC: 6 V, 12 V, 5 A	13506-93	1