The energy driving electron acceleration in an X-ray tube is supplied by what?

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Multiple Choice

The energy driving electron acceleration in an X-ray tube is supplied by what?

Explanation:
The energy that accelerates electrons in an X-ray tube comes from the high voltage applied across the tube. The filament heats up to release electrons (thermionic emission), but it’s the large potential difference between the cathode and anode that creates the strong electric field pulling the electrons forward. The energy each electron gains while speeding toward the anode is e times the voltage difference (eV). Ambient temperature does not drive acceleration, and the filament current’s role is only to produce the electrons, not to accelerate them.

The energy that accelerates electrons in an X-ray tube comes from the high voltage applied across the tube. The filament heats up to release electrons (thermionic emission), but it’s the large potential difference between the cathode and anode that creates the strong electric field pulling the electrons forward. The energy each electron gains while speeding toward the anode is e times the voltage difference (eV). Ambient temperature does not drive acceleration, and the filament current’s role is only to produce the electrons, not to accelerate them.

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