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Confirming Coulomb’s law - Measuring with the force sensor

P3.1.2.2
Confirming Coulomb’s law - Measuring with the force sensor Measuring the charge on the metal ball with the electrometer amplifier (P3.1.2.2)
Confirming Coulomb’s law - Measuring with the force sensor
Confirming Coulomb’s law - Measuring with the force sensor Measuring the charge on the metal ball with the electrometer amplifier (P3.1.2.2)
Confirming Coulomb’s law - Measuring with the force sensor
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Confirming Coulomb’s law - Measuring with the force sensor

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Description

In the experiment P3.1.2.2, the force sensor is connected to a measuring instrument, which displays the measured force directly. No calibration is necessary. The coulomb force is measured as a function of the distance r between the sphere midpoints, the charge Q1 of the first sphere and the charge Q2 of the second sphere. The charges of the spheres are measured using an electrometer amplifier connected as a coulomb meter. The aim of the evaluation is to verify the proportionalities

and to calculate the permittivity ε0.

Components of equipment sets

1 314 263  8  Bodies for electric charge, set LD
1 337 00  8  Trolley LD
1 460 82  8  Precision metal rail, 50 cm LD
2 460 95  4  Clamp rider LD
1 524 005W2 Mobile-CASSY 2 WiFi LD
1 524 060  8  Force sensor S, ±1N LD
1 521 70  8  High-voltage power supply, 10 kV LD
1 501 051  4  Cable for high voltages, 1.5 m LD
1 590 13  4  Stand rod with bore holes LD
1 300 11  4  Saddle base LD
1 590 02  8  Small clip plug LD
1 532 14  8  Electrometer amplifier LD
1 562 791  4  Power supply unit (mains adaptor), 12 V AC LD
1 578 25  4  Capacitor, 1 nF, bipol., STE 2/19 LD
1 578 10  4  Capacitor, 10 nF, bipol., STE 2/19 LD
1 546 12  4  Faraday's cup LD
1 590 011  8  Clamping plug LD
1 532 16  8  Connecting rod LD
1 300 02  4  Stand base, V-shaped, small LD
1 300 41  4  Stand rod, 25 cm, 12 mm Ø LD
1 301 01  4  Leybold multiclamp LD
1 500 421  4  Connecting lead 19 A, 50 cm, red LD
1 500 422  4  Connecting lead 19 A, 50 cm, blue LD
1 500 424  8  Connecting lead 19 A, 50 cm, black LD
1 501 42  4  Connecting lead 32 A, 100 cm, yellow/green LD
1 500 610  4  Safety connecting lead, 25 cm, yellow/green LD
1 500 640  4  Safety connecting lead, 100 cm, yellow/green LD

Experiment Instructions

PDF (Experiment description) PDF (Experiment description) P3.1.2.2 Confirming Coulomb’s law - Measuring with the force sensor
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