Investigating the deflection of electrons in electrical and magnetic fields

VP3.8.5.1
Investigating the deflection of electrons in electrical and magnetic fields
Investigating the deflection of electrons in electrical and magnetic fields
Investigating the deflection of electrons in electrical and magnetic fields

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Description

The experiment P3.8.5.1 investigates the deflection of electrons in electric and magnetic fields. For different anode voltages UA, the beam path of the electrons is observed when the deflection voltage UP at the plate capacitor is varied. Additionally, the electrons are deflected in the magnetic field of the Helmholtz coils by varying the coil current I. The point at which the electron beam emerges from the fluorescent screen gives us the radius R of the orbit. When we insert the anode voltage in the following equation, we can obtain an experimental value for the specific electron charge

whereby the magnetic field B is calculated from the current I.

Components of equipment sets

1 555624 Electron deflection tube LD
1 555600 Tube stand LD
1 555604 Pair of Helmholtz coils LD
2 52170 High-voltage power supply, 10 kV LD
1 521546 DC Power Supply 0 ... 16 V, 0 ... 5 A LD
2 500611  4  Safety connecting lead, 25 cm, red LD
1 500621  4  Safety connecting lead 50 cm, red LD
1 500622  4  Safety connecting lead 50 cm, blue LD
2 500641  4  Safety connecting lead, 100 cm, red LD
4 500642  4  Safety connecting lead, 100 cm, blue LD
2 500644  4  Safety connecting lead, 100 cm, black LD
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