Basic measurements for the electrodynamic definition of the ampere

VP3.3.3.4
Basic measurements for the electrodynamic definition of the ampere
Basic measurements for the electrodynamic definition of the ampere

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Description

The object of the experiment P3.3.3.4 is the former electrodynamic definition of the ampere. Here, the current is defined on the basis of the force exerted between two parallel conductors of infinite length which carry an identical current. When r represents the distance between the two conductors, the force per unit of length of the conductor is:

This experiment uses two conductors approx. 30 cm long, placed just a few millimeters apart. The forces F are measured as a function of the different current levels I and distances r.

Components of equipment sets

1 314265  4  Support for conductor loops LD
1 51633 Conductors for Ampere definition LD
1 51631  8  Vertically adjustable stand LD
1 726890  8  DC-High Current Power Supply 1...32 V/0...20 A LD
1 524005W  8  Mobile-CASSY 2 WiFi LD
1 524060  8  Force sensor S, ±1N LD
1 30002  4  Stand base, V-shaped, small LD
1 30042  4  Stand rod, 47 cm, 12 mm diam. LD
1 30101  4  Leybold multiclamp LD
1 50126  4  Connecting lead, 32 A, 50 cm, blue LD
1 50130  8  Connecting lead, 32 A, 100 cm, red LD
1 50131  4  Connecting lead, 32 A, 100 cm, blue LD

Experiment Instructions

PDF (Description from CASSY Lab) PDF (Description from CASSY Lab) P3.3.3.4 Basic measurements for the electrodynamic definition of the ampere
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