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26 August, 13:56

The cathode-ray tube is a direct application of which of the following? The effects of bar magnets in the presence of a magnetic field.

The movement of charges through a circuit.

The acceleration of electrons through an electric field.

The movement of electrons in the presence of a magnetic field.

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  1. 26 August, 14:05
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    The movement of electrons in the presence of a magnetic field.

    Explanation:

    cathode-ray tube (CRT) has to do with

    a vacuum tube in which an electron beam is deflected by applying electric or magnetic fields, produces a trace on a fluorescent screen. Cathode-ray tubes are uses in the television (TV) display. Other uses include radar displays, oscillography, and visual displays for computer terminals.
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