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Physics · Conduction of electricity through liquids and gases

PhysicsConduction of electricity through liquids and gasesJAMB

In a cathode-ray tube, the electrons are produced by

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Answer: A. thermionic emission from a heated cathode

The heated cathode releases electrons, which are then accelerated.

An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.

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