explain: 1, discharge tube 2, the role of vacuum pumb in discharge tube 3, the use of power source in discharge tube
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Answer:
A discharge tube is an arrangement of electrodes in a gas within an insulating, temperature-resistant envelope. A discharge tube is an electrical device in which current flow is by electrons and ions in an ionized gas, as in a fluorescent light or a neon tub
The function of vacuum pump is to reduced or change the pressure inside the tube. The two electrodes are connected to a high voltage battery. In discharge tube experiment, at low pressure and at very high potential difference, electric current is passed through the gas
Discharge tubes can be used to prevent current flow below a certain voltage; they can also function as lamps by the use of ionizing gas, which glows when current flows through the tube. (physics) Any device in which a flow of electrons (ions) through a gas acts as a source of light